My sister just came into my room and noticed my male checker was doing something weird, i got up and looked. It looked as if he was trying to puke, but there was nothing coming up... there shouldn't be anything wrong with him, he just ate a fuzzie 2 days ago. It kinda looked like what they do when they eat something along with there regular food. BUT i feed them seperate, and the odd time in the cage, but always watch them.