Right now I only have one pet - a black cat that we usually just call "The Girl" (she had a brother that we called "The Boy", but he disappeared).
I just recently lost my first cat, Pip (also a black one), at the age of 15 due to an eye infection and serious digestive problems - boy, he was one of the most affectionate, loving cats ever.
I've had other cats as well - my second cat was a tabby named Whisper (though eventually we mostly started calling him Crisp) who died a few years ago, and there were four others after that (two tabby siblings named Leo and Sissy, a very shy black-and-white cat named Booker, and a hyper furry orange-and-white cat named Meow-Meow) that just disappeared.
My very first pet, and possibly my favorite was a Boston terrier named Buddy. He came into my life when I was 3, and was such a wonderful bundle of love and fun. Unfortunately he got run over at the age of 7. I had one more dog after that, Lucky (a black Lab mix), which I never got quite as attached to, but it was still very sad when he died at the age of 2 from seizures.
Finally, I once had a trio of goldfish named Joe, Moe, and John (named after my neighbors). Moe died pretty early on from jumping out of the tank, and Joe and John were eventually were given to the local pizza parlor, as they had a bigger tank. We would still visit them frequently.