I don't know the percentage, but I have one "lap cat" - TJ who is part dog, as she always follows me around and has to be near to me all the time. The other night it was chilly, so I was cuddled under a quilt watching TV, when she jumped up, nudged her way under the quilt, then cuddled with her head on my shoulder. We have had a couple of dogs over the years, but I don't have the ability to care for a dog now in our apt. I'd probably get more exercise if I did have a dog.