I stopped to count the frogs this morning, and there was an extremely tiny one (about 1cm long).
These two shots are taken at the same distance (approx 2.9m away) and cropped the same amount. The one on the left is the tiny tiny frog, and the right hand one is a regular sized Dwarf Tree Frog (approximately 3cm long).

A regular sized Dwarf Tree Frog (approx 3cm) on a reed. Fully green on top, white underside, much less bandit mask.

A very very tiny frog on a reed leaf. It is approximately 1cm long, green and brown on top, white chin/underside and a bandit mask.