I would go to see that, regardless of who narrated it, but having Chris doing it would just be icing on the cake. Some people, like Sam Elliott, and the late great Charlton Heston, have voices absolutely meant for narration. I wouldn't quite put Chris in that category, but he's close. And he's young yet. He'll get there.
In the meantime, as a dog lover, I'm sure this will be a treat.