How many cats do you have?Must be fun having 4 of them! You might be surprised by how rough cats can play too. I'm always having to rescue one poor guy in particular.
I don't have any right now, my last guy passed away last January at 19 years old. But he used to have a sister (I rescued when they were 4 wk old kittens) and they sounded like a herd of elephants leaping around, shook the whole house when they ran and chased each other upstairs. Always found dead birds and mice on my doorstep. *sigh* I miss cats. The last 8 years were pretty mellow though.