An update on the above paragraph: my green frog twins answered my question: and that is: yes, they can eat a cricket larger than usual. They can also chase a cricket larger than usual. When crickets are eaten, the next day when they are sitting on driftwood or rock, looking bored and unloved, are there any "toys" I can provide? I have a wood bird ladder, a cat ball with jingle bell, plastic salamander that is yellow with red spots that just sits, oh and political ads they can jump from. Other than that, I can't always count on national geo having a reptile show. I guess frogs must be used to sitting and staring into outer space and occasionally jumping. I have heard them chirp in the evening. Anyway, just wanted to update my original question.