Are tree frogs found all over the world or in certain parts?

Question: Are tree frogs found all over the world or in certain parts?
- Keywords:
  animal,
  frog,
  tree frog
Asked by toms to Niall on 21 Mar 2013.
- Niall Crawford answered on 21 Mar 2013:
  
  They are found in lots of places, but they need certain conditions to live, with warm and moist conditions like in the rainforest the best. Still, there is a species which lives in southern europe.

Question: Are tree frogs found all over the world or in certain parts?