Bruce Willis feels he was particularly qualified as an actor to voice a CG raccoon thanks to the many years he spent living in the rural-esque countryside of Idaho. Willis spent twelve years there with his family while raising his children, because he didn't want them turning into "Hollywood brats."  According to Willis, he experienced all manner of animal encounter while living there, including his pet dog going to the vet to have quills removed from his mouth after attacking a porcupine. Willis' pets also had encounters with wild beavers (one of which apparently almost killed his dog) and a skunk or two. Willis said he never expected this experience to help with with a movie role, but was also quick to note Over the Hedge is not meant to actually teach anyone about wild animals or the environment.

So the main thing I drew from these Willis comments is Bruce Willis' dogs are particularly unlucky. I mean, beavers can get pretty riled up when they get going (Bruce isn't the only one around here who grew up rural) but nearly killing a dog is a pretty mean feat for a beaver ... they tend to run much more readily than they stand and fight. Maybe the furry little sucker was a C.S. Lewis fan and got inspired by the Narnian beavers ...