A White’s tree frog (Litoria caerulea, also called the dumpy, green or smiling tree frog) needs a warm basking spot of about 30 °C, humidity around 60 to 70%, a low output UVB lamp and water deep enough to submerge in. The vet and welfare sources we read give no minimum enclosure size.
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Enclosure and water
RVC’s care sheet gives no enclosure size, and neither does any other vet or welfare source we found. It does ask for enough water for the frog to submerge comfortably. A vet care sheet for Australian tree frogs as a group warns that tap water often carries chlorine and heavy metal additives that can be dangerous to frogs.
Temperature and humidity
Heat a basking spot of about 30 °C with a light emitting spot bulb, keep the cool end at about 25 °C, and don’t let it drop below about 21 °C overnight. Put every heat source on a thermostat and check it with a digital maximum and minimum thermometer, so the tank doesn’t overheat. Measure the humidity in the middle of the vivarium and keep it at about 60–70%.
The Unusual Pet Vets’ sheet for Australian tree frogs gives a gradient from 18 °C at the cool end to about 32 °C at the warm end, with some species preferring it a little cooler, and 50–70% humidity for most species.
Light
White’s tree frogs are mostly active at night but appear to benefit from UVB, so RVC uses a low output lamp. The Unusual Pet Vets says a frog should be able to bask within 20 cm of a UV light for it to work. See UVB strength explained.
Everyday diet
Feed insects no bigger than the distance between the frog’s eyes, every day for juveniles and every other day for adults. Overfeeding is a common problem in these frogs. Dust the insects with a calcium supplement and a vitamin and mineral supplement, one then the other.
The Unusual Pet Vets gives adult Australian tree frogs 10–20% of their body weight in insects each week, over 2–3 feeds.