I have been feeding my newts with tweezers lately and both of the newts were going for the same food so the one newt bit the other! this has never happened before to me. they are the same species Chinese fire bellied newts, could he just have been very hungry? it seemed to startle the other newt and he went into hiding, actually I thought i saw this before when they weren't eating. they are both males could this be a territorial thing? do i need a bigger cage? when it comes time to eat should i put the problematic newt in a separate container?