guess it really depends on the cat we had our first cat for a couple years she never did the biting thing (well playfully but i started that then she stoped) as a little kitten she was playful and running around alot once she hit a year she became an old cat just laying around not a care in the world. last year we got a new kitten and now they BOTH DRIVE ME CRAZZY they chase eachother around crazy jumping off the tables and chairs all in a sprint, if i could go back and do it all over again id never of got the 2nd cat it was much more peaceful around here. (ok if i could id of never got the 1st cat either but what can i do)