what is love for meat called

A carnivore.

I'll leave the dirty answers to others.

Is this a joke? Or a translation question? If it is a translation question; I don't believe there is a single word in English. Meat lover or meat enthusiast covers it.

If you want to say it in a nice way in English you would probably borrow from the French or Spanish:
Mary is a gourmand when it comes to meat.
Mary is a meat aficionado.
Both of these terms also imply that the meat must be good.

Insulting ways:
Mary is a meat addict. (couldn’t stop eating it if she wanted to)
Mary is a glutton when it comes to meat. (eats too much)

Vegetarians would probably call it bloodlust!

samad, is their a word in your language that describes this? In English, there really is no specific term.