Most of the time you can just "annoy" your buddy a bit. Just poke his mouth and feet gently with the food item and he might react to it.

https://www.youtube.com/watch?v=qbwh...e_gdata_player

Uploaded this for demonstration (not the right frog for this... He is always hungry ^o^)

Gesendet von meinem HTC One X mit Tapatalk 2