Here are some clues:
1, The actor has played two nasty Christmas villains.
2. He was the first actor to receive a $20 million dollar salary for a movie.
3. He started out as a stand-up comic.
4. He was born in Canada.
5. He became an American citizen in 2004.
Answer: A Jack Russell named Milo and actor Jim Carrey
Source:diply.com