Right now, I don't have any. My lease doesn't allow it, and even if it did, I couldn't afford to keep a cat, which is what I'd really want.
At home, my parents have three cats; I consider them mine even though I don't live there, lol. :p One's a black cat named Midnight, one's a Siamese-looking cat named Mr. Fuji, and one's an orange cat named Gambit that I haven't actually met that much, but looked cute last time I saw him.
The last time I had a pet of my own was a Betta fish named William. I was one day going to get another and call him William the Second. 8D Like I said, though, pets aren't allowed (although I can probably get away with a Betta fish bowl).