Each year, frogs all over the world are celebrated on 20 March – World Frog Day. But do you know what it takes for a frog to have a Good Life? Haven't the froggiest? Here we outline a few key aspects to keeping these web-footed, leaping companions content.
Frog facts
New Zealand has three native frog species (or four, depending on if you group Maud Island Frog with Hamilton’s Frog). These frogs are endangered and must not be kept as pets.
For people keen to have a companion frog, there are three Australian frog species available (southern bell frog, green and golden bell frog, whistling/southern brown tree frog). These frogs can be long lived (5 – 15 years, depending on the species), so it is important that their captive homes are well setup, and allow them to perform natural behaviours.
While not all specific to the species kept as pets in NZ, frog research exists that demonstrates the benefits of improving housing environments.
Key Elements for Frog Housing
Enriching environments that promote natural behaviours. Shelters should allow frogs to hide, particularly during the day if they are nocturnal. It also helps to cover insects with leaves that will promote natural frog foraging behaviour. (1)
Appropriate social structure. Both southern bell, and green and golden, frogs are typically solitary, territorial and sometimes cannibalistic, yet each species naturally congregate during the mating season and call to one another. (2) Therefore, keeping a single frog without providing the opportunity to communicate with another frog may compromise its welfare. Make sure you do your research on the species of frog you’ll be bringing home and how they prefer to interact – or not – with other frogs.
Background surroundings are important. We tend to focus a great deal about what is on the inside of a pet’s enclosure, so often the outside gets forgotten. For instance, research into largely water-dwelling frog shows that surrounding their enclosure with a dark coloured background reduces stress and weight loss. (3) It is important to know what kind of colours and images your frog species would naturally encounter and try to mimic that.
Be conscious of noise. A study of southern brown tree frogs experiencing traffic noise reported that these frogs increased the pitch of their calls. As this work aimed to evaluate mating success, the authors did not reflect on overall frog welfare, nonetheless this (and other) work demonstrates that frogs are sensitive to noise, and therefore we should be cognisant of the ambient noise of pet frogs’ enclosures. (4)
A Final Note
It's crucial to remember that pet frogs should remain as pets and never be released into the wild. This is vital for the welfare and future of New Zealand's native frogs. To learn more about these fascinating creatures and conservation efforts, visit NZ Frogs, a charity dedicated to frog conservation: https://nzfrogs.org
We hope you found this a ribbiting read – now hop along and enjoy international frog day!
References:
Michaels CJ, Roger Downie JR, Campbell-Palmer R. 2014. The importance of enrichment for advancing amphibian welfare and conservation goals: A review of a neglected topic. Amphibian & Reptile Conservation 8(1):7–23. https://amphibian-reptile-conservation.org/pdfs/Volume/Vol_8_no_1/ARC_8_1_[Gen_Sec]_7-23_e77_low_res.pdf
Introduced Frogs. 2021. The New Zealand Herpetological Society. https://www.reptiles.org.nz/herptetofauna/introduced-index
Holmes AM, Emmans CJ, Jones N, Coleman R, Smith TE, Hosie CA. 2016. Impact of tank background on the welfare of the African clawed frog, Xenopus laevis (Daudin), Applied Animal Behaviour Science 185:131–136. https://doi.org/10.1016/j.applanim.2016.09.005
Parris KM, Velik-Lord M, North JMA. 2009. Frogs call at a higher pitch in traffic noise. Ecology and Society, 14(1). http://www.jstor.org/stable/26268025