SCF gave excellent advice!

Pyxies will also use water as a cooling spot, but they really like water. They are a member of the family of true frogs "Ranidae" and thus spend the majority of their time when out of aestivation in the water.

Not all live on the Savannahs of Africa though. Some live in swamps with some tree cover and vegetation. They do live in many varying climates. Some areas droping down to freezing in their range and reaching over 100°F during the day.