“Did you know pigs are as smart as dogs? It's true. I knew this guy in El Capitan who taught his pig to bark at strangers.”
Casey Siemaszko - Charles 'Charley' Bowdre

“- Lars Smuntz: I don't believe it. He snapped the trap, ate the olive and left the pit just to mock us!
- Ernie Smuntz: I think you're giving him a little too much credit. Mice don't mock. They don't have a sense of humor or irony.”
Lee Evans - Lars Smuntz
Nathan Lane - Ernie Smuntz

“- Jay: Why the big secret? People are smart. They can handle it.
- Kay: A person is smart. People are dumb, panicky dangerous animals and you know it.”
Will Smith - Jay
Tommy Lee Jones - Kay

Cats are smarter than dogs, huh? Right. She doesn't even know the meaning of the word "Stay".

Michael J. Fox - Chance

“- Chris: What do you mean?
- Cathy: She never allowed us have a... dog, or a kitten.
- Chris: What's that got to do with anything?
- Cathy: Because pets die, Christopher. And if we had had a pet and it had died, then we would have learned something about that.
- Chris: About what? About death?”

Jeb Stuart Adams - Chris
Kristy Swanson - Cathy