animalist

noun6

1. •
   A painter or sculptor whose primary subject is animals.
2. •
   A writer of animal stories.
3. •
   One who believes in the dominance of man's animal nature in behavior.

   • The animalist’s claim that all persons must be animals, if true, will have to be a posteriori truth. — 2002
4. •
   An animal liberationist.
5. •
   A sensualist.
6. •
   (rare) One who believes that microorganisms cause disease.