Can tree frogs stick to anthing or can they just stick to trees and plants??

Question: Can tree frogs stick to anthing or can they just stick to trees and plants??
- Keywords:
  tree frog, animal
Asked by ktharper to Emma, Jimmy, Janet, Niall, Simon on 9 Mar 2013.
- Simon Park answered on 9 Mar 2013:
  
  I’m a microbiologist, not a froggy person but I’ve seen tree frogs in zoos sticking to glass
- Niall Crawford answered on 10 Mar 2013:
  
  Guess this question’s for me to answer! They can stick to tons of surfaces, glass, plastic, wood, stone, metal. Their sticky pads allow them to climb all sorts of things.

Question: Can tree frogs stick to anthing or can they just stick to trees and plants??