Our cat, Tifa, is a little "species confused" :)
She plays "fetch", pants like a dog, and wags her tail!
This video is from when Tifa was about 6 months old.
For those of you concerened about the panting, she went through several tests and the vets saw nothing wrong with her. She only panted when running and playing for too long.
Today she's more than a year old, doesn't pant anymore (she's gotten too lazy for all that running :P) and is leading the life of a perfectly happy and healthy cat... Or dog, I don't know anymore.