well I'm going to agree with green frog for the following reasons:
the overall size, even if it we're a bullfrog looks like its a little undersized.
the legs don't look muscular enough for a bullfrog, and the hind feet do
not look webed enough either, a bullfrogs feet a totally webed......and
last but not least the eyes don't sit high enough on the head, in other words they don't bulge enough....................