I have a 5 week old kitten (who doesn't seem to know to drink water) and my room mate has a 4 year old cat (Kitty). At first the Kitty didnt like my kitten, he would growl and hiss at him whenever my kitten would get close... well now, 3 days later, it seems that Kitty is beginning to get use to my kitten. No more hissing and growling... in fact some licking takes place now. My question is that when my kitten plays with Kitty, Kitty always seems to bite my kitten on the neck, where his jugular is. Is he just playing with my kitten or is he attempting to kill him?