Vampires are creatures of folklore and mythology, not real animals. Cats, while sometimes associated with the supernatural, are real animals with normal biological needs.
There are some health conditions in cats that might make them appear a bit "vampire-like." For example, a cat with severe anemia might have pale gums, but this is due to a medical condition and not any supernatural powers.
So, while the idea of a vampire cat might be fun to think about, it's important to remember that cats are real animals with their own unique characteristics and needs.