Moths, tree crickets, ants, flies, grasshoppers, and beetles. Late May through late July, with the breeding period itself lasting up to 2 months. Gray Treefrogs breed in ponds and swamps, or any semi-permanent standing water. Males gather around ponds and swamps where they can be found calling from the ground or perched in bushes or on cattails up to 2 m from the ground. Males are territorial, defending their calling sites quite aggressively.
Females choose males according to their calls.
A female walks towards the male and then either touches him with her nose or leaps onto him. The male immediately grasps the female and the two go off to deposit the eggs. Satellite males either intercept a female attracted to a singing male or take over the resident male's calling site when he leaves with a female to continue the mating process. The eggs of Gray Treefrogs are light colored, gray on top and white underneath. They are laid in clusters or singly on underwater vegetation until about 2000 eggs are deposited.