I have two normal balls. Not sure of weight, one is 3 feet and a little thinner(sasha), and ziggy my big guy almost 4 feet. Ziggy will be patient when eating and will wait for the medium rat to "kiss" him before he strikes the face.. sasha on the other hand strikes at anything less than a second after it hits the bottom of the feeding bin. (super docile any other time) so because of her anxious eating I feed 3 mice as opposed to a rat cause she shows no interest in warm pre killed. And I don't want her bitten. She has not been bitten but she will strike anywhere on the mouse she sees first. Is this normal? Is my method of 3 mice one after another acceptable? I fear an acceptable sized rat would chew on her rather easily