Life is pretty much a bag of treats when you're an endlessly energetic Jack Russell Terrier. For Fenway, days are filled with important things like defending the Dog Park from wicked squirrels, snuggling with Hattie, and catching up on the neighborhood gossip with the next-door dogs Goldie and Patches. But that all changes the day a fiendish new intruder enters Fenway's turf: he's fluffy, he twitches evilly, and he smells worse than squirrels...

He's a bunny. An...