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Or, maybe she's the voice of the dog, like in Dr. Doolittle or Homeward Bound.
I know, some of you mean people are already thinking of a variety of jokes on the Richard Gere/gerbil thing, and I won't suppress your right to free instincts, but bring your "A" game if you decide to go there.
Much more progressively crude and low-brow humorists would go for Hachi (that's Hachiko : A Dog's Story, in American language) being about a rich, convenient Buddhist saving a Chow-mix from a starving Chinese family of eight, or something.
I just hope they have a scene in there where Joan Allen Dog sniffs Gere's butt after he gets out of the shower and he's all "Hey! Whoa!" and she's all "Get ouuutta heeere! I'm a dog, remembah?!? RUFF!". That would be the best.