In Interview with the Vampire Louis would feed on rats instead of humans.
Rats
rats
rats
Rats
It was rats.
rats
He fed on rats and small animals
If Ash Ketchum was a vampire it would be interesting and he also would prey on humans for blood at night as well.
Because they would start a vampire army and kill humans
Well in an interveiw Rob actually says that he hates the idea of being a vampire because he would see everyone he knows and loves die around him and also would be very bored because of his immortality xx
You can call them whatever you want to call them, they don't have to have vampire names, they were humans before so they would therefore have human names afterwards as well.
Animals; poodles for example.