Why do dogs dig holes in the garden?

Of the many lovable traits our canine companions have, digging big holes in the garden is not likely one of them. But why do some dogs love to dig so much? We look into the underlying reasons why this can become their favourite pastime and what you might be able to do about it. 

Let’s cut to the chase. For dogs, digging is an instinctive behaviour. You might know this already in some way – as we see many companion dogs shovelling dirt with their paws as if they were born to transform our carefully tended gardens into excavation sites. But despite looking natural – we still scratch our head thinking Why? What are they getting from this? 

An instinctive heritage 

The ancestors of our domestic dogs dug to create dens or shelters, or to bury food for later consumption, and those that dug well would have been more likely to breed and survive. These ‘hard-wired’ traits are so ingrained, despite having no obvious function in the modern living situation and many, many years of humans domesticating canines to meet our changing expectations.  

Recent genetic studies suggest that domestication of dogs might have taken place earlier than we originally thought. Early zooarchaeological research found evidence of dog domestication somewhere between 12-15,000 years ago. However, DNA analysis highlights that dogs likely split off from their wolf-ancestry around 130,000 years ago! While this doesn’t mean they were companion animals for all this time, it supports that dogs were alongside humans a lot longer than we originally thought.  

That means thousands of years of dogs digging the Earth. In other words, it is one heck of a legacy of survival strategies passed down through generations! 

However in modern times, these hard-wired traits can cause problems for us. So, what can you do? 

Addressing the root causes of digging 

When dealing with unwanted digging, it’s important to remember that whilst often considered as a nuisance for pet owners, digging is a perfectly natural behaviour for dogs – alongside barking, circling before lying down and other distinctive “doggy” behaviours.  

Consider how well adapted their strong front paws are for digging and shovelling, with some dogs (terrier breeds especially) being ‘purpose-bred’ by humans through history for use in digging foxes/rabbits from their dens/burrows. 

To understand why dogs dig holes in the garden, we need to go back to basics. For a behaviour to be maintained, there must be a rewarding consequence for the animal. It could be that a negative situation perceived by the dog is alleviated through doing the behaviour, or a positive circumstance and feeling is enhanced. It’s important to understand the motivation for the digging behaviour, so that it can be effectively and humanely addressed. 

There are a number of possible reasons or underlying motivations for why dogs start digging and why the behaviour is maintained including: 

• Boredom or Anxiety: Dogs may dig out of boredom or to alleviate anxiety and stress. It's their way of coping with excess energy or pent-up emotions. If you prevent digging without providing an alternative outlet or activity that is effective for reducing negative emotions such as stress or anxiety, you will be making the situation worse for the animal. 

• Comfort-Seeking: Digging can also be a way for dogs to create cool spots in hot weather or warmer places during colder periods. So, if digging is connected with temperature changes – this provides a clue to how the behaviour can be effectively addressed. 

• Instinctive Hunting: Some dogs, driven by their prey drive, may dig to unearth little ground dwelling creatures like rodents or insects, using their keen senses of smell and hearing. If you notice that the dog tends to dig most at certain times of the year or in certain places, such as the roots of trees or fence posts – this may be due to them sensing grubs or rodents under the ground. Of course, the rewarding consequences of digging and locating a tasty food item, or the fun of the hunt – means that the digging behaviour will be maintained. 

• Hoarding Instinct: Dogs may hide prized possessions, like bones, by burying them in holes, a behaviour rooted in their instinct to hoard food. This behaviour has stood the test of time through evolution and had important survival value. Although they don’t need to hoard food to eat when food is scarce, some domestic dogs instinctively hide precious goodies. Redirecting the ‘hiding behaviour’ through positive training to a place that is less damaging to the garden, is one way to reduce the dog’s need to dig a hole to bury special food. 

• Attention-Seeking: If digging earns them attention from their human companions, dogs may continue the behaviour as a means of seeking interaction. There’s nothing more rewarding to a social animal like a dog as their human giving them attention, so if a dog learns this works for them – the unwanted behaviour will be reinforced. If this is the possible motivation driving the behaviour, it’s important to ensure that you don’t become the cause! 

• Escape Behaviour:  In some cases, dogs may dig to escape from fenced areas, especially if they frustrated or stressed by being contained due to being left alone for long periods without proper mental and physical stimulation. If this is the reason for the dog to dig, then it’s important to address the behaviour as a symptom of the dog being in a negative emotional state. Training and use of enrichment to make the environment more interesting and rewarding, are two ways to provide a better life experience for the dog. 

Whilst there are many options for deterring or eliminating digging behaviour, understanding the underlying cause is key to managing it effectively and ensuring that the dog continues to enjoy a Good Life.  

Since digging is a perfectly natural behaviour and many dogs appear to love to dig – owners need to think about how they can provide their dog with a suitable alternative, and/or a managed opportunity for them to enjoy themselves.  

A small sandpit as a designated digging area for your dog, will provide him/her with an outlet for rewarding behaviours such as digging and playing in a controlled environment, whilst also sparing the lawn. Reinforcing digging ONLY in that designated area can be through burying dog treats and toys in the soil/sand and giving the dog positive attention when they are digging only in that area.   

The next time you catch your furry friend excavating your flower beds, remember, it's not just a hole in the ground - it's a glimpse into their instinctive world. 

National Puppy Day: why appropriate socialisation and habituation is so important for future wellbeing

23 March is National Puppy Day! Today we celebrate the unconditional love and affection puppies bring to our lives. But how do we turn our love into meaningful actions to set our puppies up for success?

Most people know that a new puppy will bring a great deal of joy to their new human companions – however, did you know that the socialisation a puppy gets in early puppyhood can establish the behaviour patterns they will have for the rest of their lives?  

What is socialisation? 

The process of ‘socialisation’ includes social aspects such as human handling and socialisation with other dogs and animals. It also includes exposure to various environments, objects, and experiences.

Puppies who only have contact with people and pets in their own household during their first few months are likely to be fearful of unfamiliar people and dogs that they encounter later. The aim of any socialisation effort is that it be done in a positive manner, so the puppy gains knowledge, trust and resilience, giving it the education it needs to lead A Good Life, and to be a good canine companion and societal citizen.   

When should socialisation start? 

Before three weeks of age, puppies’ sight and hearing are developing, so they are wholly reliant on their mothers. Nonetheless, even at this young age, puppies that are handled are calmer at eight weeks (barking less and exploring more) compared to those that are not handled. In an ideal world, puppies should complete their vaccinations and be ready to socialise with other dogs on walks or at well-run puppy classes at around 12-weeks old. However, the need for socialisation needs to be balanced with the need to effectively protect puppies from exposure to diseases whilst they are not fully vaccinated and it’s important to be guided by your vet in this area. 

What we do know is that as puppies become less reliant on their mother, socialisation becomes even more important. The experiences (positive and negative) a puppy has during this period have lifelong effects. The period from about three weeks to 14 weeks of age is when the process of ‘habituation’ can take place most effectively. During this time puppies learn that things they are exposed to at a manageable level are normal and do not pose a threat to them and don’t need to be feared. This means that providing the puppy with a range of positive experiences, enrichment toys, handling and safe interactions with fully-vaccinated dogs will all help set him or her up for a great future. 

Of course, as anyone that has raised a puppy knows, continued contact with humans, other dogs and animals, and varied sights and sounds, is important throughout the juvenile stage of life as well, as all these interactions contribute to the way the dog ultimately behaves as an adult.   

 Benefits of socialisation 

Socialisation is a fundamental component to ensuring a dog can lead A Good Life with its human companions. Research has reported numerous benefits of socialisation, including: 

• Positive lifelong bonds and relationships with humans 

• Increased trainability 

• Openness to new places, people, and animals 

• Capacity to cope with stress, like sounds and separation 

• Reduced negative adult behaviours, like fearfulness and aggression 

• Increased positive adult behaviours, like friendliness and the ability to learn tasks  

Considerations  

It is important that the interactions and experiences provided during the socialisation period are appropriate for the age and breed of the dog. For instance, one study reported that exposure to loud noises early in life (particularly not in a controlled manner) resulted in fearful responses to fireworks, gunshots, and thunder later in adulthood.  

If socialisation is aimed at introducing other animals, some breeds innately react differently than others. For example, herding breeds naturally ‘work’ livestock.  

Interestingly, research suggests that more varied stimuli, including some instances of mild stress, will result in the dog being more resilient in adulthood. One study showed lifelong benefits of very short instances of removal from their nest in very early life.  

However, it is important that socialisation is ultimately a positive experience for puppies, so stressors should be just a tiny portion of the socialisation experience. A final consideration is puppy classes. A review of various studies yielded a mixed result; while such classes serve to provide socialisation opportunities for some animals (like those that receive no other exposure to dogs), it’s important that the experience is a positive one for your pup, and it’s likely that they should just be one part of the wider spectrum of puppy experiences in early life.  

 Seeking advice 

Most of us have a reasonable understanding of the people, animals and experiences to which we want to socialise our puppies, but the way to accomplish this exposure in an effective and positive way can be daunting.  

It is best to seek advice and assistance from someone who is accredited for their skillset. You can find accredited professionals on our Companion Animals NZ website page here. Given the importance of your puppy’s early life on their future psychological and emotional wellbeing, as well as yours, seeking advice from a professional trainer at the puppy stage is well worth the investment.  

References:  

1. Gazzano A, Mariti C, Notari L, Sighieri C, McBride EA. 2008. Effects of early gentling and early environment on emotional development of puppies. Applied Animal Behaviour Science. 110(3-4):294-304. 

1. Battaglia CL. 2009. Periods of early development and the effects of stimulation and social experiences in the canine. Journal of Veterinary Behavior. 4(5):203-210. 

1. Miklósi Á. 2014. Dog behaviour, evolution, and cognition. oUp Oxford. 

1. Howell TJ, King T, Bennett PC. 2015. Puppy parties and beyond: The role of early age socialization practices on adult dog behavior. Veterinary Medicine: Research and Reports, 6:143-153. 

The science of dog training: three key building blocks

Our beloved dogs hold a special place in our hearts, with around a third of New Zealand households welcoming these faithful companions into their homes. However, ensuring that our canine friends become valued members of society requires more than just affection; it involves understanding their needs and behaviors to promote responsible ownership and training.  

Here we explore three building blocks for effective and humane dog training, shedding light on how owners can cultivate strong bonds and positive behaviors in their canine companions. But first, let’s step back in time to look at the history of our bond with dogs. 

History of "man's best friend”  

The human-animal bond is considered to be over 12 thousand years old and was likely to be originally based on a mutually beneficial relationship. The dog was one of the first animals to be domesticated – transitioning from being tolerated as a scavenger around the early human settlements to being valued as a human companion, in a relatively short time. The domestic dog (Canis familiaris), one of 38 species in the canine family (Canidae), shares behavioral tendencies with its relatives such as wolves, coyotes, and foxes.  

Yet despite selective breeding for various traits and the length of time we’ve had with them as companions, dogs retain many behaviors common among canines. Behavioral problems often stem from a lack of understanding of normal dog behavior and the variability among breeds and individuals. In many areas, we as humans are falling short in terms of meeting their welfare needs. 

Effective training is one area where there is much room for improvement. Even with the correct use of positive reinforcement methods (often called reward–based training), there are often problems, such as: with the timing of the reward, the clarity of the signals and other factors that can cause problems for the dog in making the correct associations. This can sometimes cause a breakdown in training success - which can be frustrating for both dog and human.  

Sadly, this often leads to inappropriate use of aversive training and handling techniques and even the use of inhumane methods to force the animal to perform (or not) the behaviour.  

A way to overcome this is for dog owners is to understand more about how animals learn most effectively, how they are motivated and how they are different from us.  

1. Understanding Canine Ethology (the science of animal behaviour):  

Dogs are dogs, people are people. It seems a simple statement, but it is very important to understand that what matters to them is different to what matters to us.  

Dogs have evolved from ancestors who were predators, social pack animals and with senses far superior to humans. Making the time to understand them and the way they perceive the world, can not only help us to train in a more canine-centred way but also to appreciate the amazing animals that they are. 

Dogs, though descended from wolves, have been unintentionally bred for a more juvenile appearance, known as paedomorphosis, affecting their communication abilities compared to wolves. This altered physical appearance can affect dogs' communication abilities compared to wolves, with breeds like brachycephalic dogs experiencing limitations in facial expressions. As social beings, dogs thrive in modified pack systems, relying on effective communication for social interactions, underscoring their enduring bond with humans. Despite this bond, issues like relinquishment to shelters due to perceived behavioral problems highlight the need for better understanding and management of canine behaviour, emphasising the importance of education and support from professionals in the field. 

In short, we need to apply science to practice when looking after our canine friends. 

2. Intentional modification of behaviour (AKA “training”) 

Dog training can be defined as the ‘intentional modification of the frequency and/or intensity of specific behavioural responses’. This may sound like a mouthful, but it is crucial to know this isn’t about learning commands – it is about reinforcing a particular desired response to a signal in a consistent and timely manner. This is key to your dog making a good connection between the signal or cue you use and the behavioural response you want. 

Dogs learn through making associations between their actions or inactions and the consequence these actions have for them. Successful and humane training relies upon the trainer having a good understanding of the application of learning theory, dog behaviour and a clear understanding of the goals and the limitations of the training approach being used.  

Reinforcers - from theory to practice: 

• Types of Reinforcers: Reinforcers can be positive, such as treats or praise, or negative, like the release of pressure on a leash (not to be confused with punishment techniques), and are effective in shaping desired behavior. Choosing the reinforcer to use will need to take into account the individual character of each dog, since some will be food motivated, but others prefer to work for toys or attention. 

• Secondary Positive Reinforcement: Techniques like clicker training utilise secondary positive reinforcement, conditioning dogs to associate a specific signal with a reward, facilitating training even at a distance. 

• Reinforcement Schedules: There are also different types of reinforcement schedules that can be used to keep your dog motivated. Once the dog has learned the association between a cue/signal because he/she has been rewarded after every correct response using a continuous reinforcement schedule –some trainers will switch to a more variable schedule so that the dog maintains his or her motivation to perform the response, or even get better at it. The differential reinforcement (DR) schedule is where the dog is given different valued rewards that reflect the quality of their performance of the response. For example, the dog only gets rewarded for above-average responses, getting better rewards for better responses. 

 Punishment-based methods, like loud noises or shouts should be avoided. These may temporarily stop unwanted behavior but can lead to fear and anxiety in dogs. Responsible guardians should prioritise reward-based or positive training methods, emphasising the need for humane and ethical treatment in achieving successful behavior modification in dogs. Developing good timing, whatever method you use, is key to reward the response you want consistently and immediately.  

3. Asking for help 

Finally, it is absolutely fine to ask for help when you need it. Asking for help when you need dog training is not only acceptable but highly encouraged for several reasons. Firstly, every dog is unique, with its own personality, temperament, and learning style, making it challenging for novice trainers to navigate training complexities effectively.  

Seeking guidance from experienced professionals ensures that training approaches are tailored to your dog's individual needs, maximizing effectiveness and minimizing frustration for both you and your pet. Additionally, professional trainers possess a wealth of knowledge in canine behavior and training techniques, offering valuable insights and strategies to address specific issues or challenges you may encounter during the training process.  

Moreover, seeking help demonstrates responsible pet ownership, prioritising your dog's well-being and development by investing in proper training and socialisation.  

You can get expert help from one of the Companion Animals New Zealand Accredited Animal Trainers and Animal Behaviourists who only use humane training methods that are based on an understanding of the way animals learn. Follow the link below for more information about who you can approach in your area.   

More about responsible pet ownership 

In New Zealand, regulations outlined in the Dog Control Act 1996 establish legal obligations for dog owners, emphasising care, control, and registration. Companion Animals New Zealand advocates for microchipping and registration, promoting initiatives like the New Zealand Companion Animal Register to enhance pet safety and reunification in case of emergencies or straying. 

Tolerance for our pets by others in our community requires that they be trained and contained so that they do not become a public problem. Being a good animal citizen is essential, and since the dog doesn’t know the rules, it’s up to the responsible owner to ensure that they provide their dog with the correct socialisation and good training to ensure they are an asset rather than a liability.