Question

How could you tell what gender a green tree frog is?

Answer 1

Sometimes there's a difference in skin texture between male and female frogs. Most often, males have the rougher or spikier skin than the females.  Males of this species have conical spikes running down their backs, while females are smooth.

Answer 2

To tell if your tree frog is male or female, measure its size, since females are typically half an inch larger than males. Next, check whether your frog has a vocal sack on its throat, which may look like baggy skin, because only males have vocal sacks.