You know the type: Loud as a motor bike, but wouldn't bust a grape in a fruit fight. Rocco is one of those dogs that'll howl and growl, but you quickly find out he's harmless. I met this 3-year-old pup from Indianapolis tonight. He came from a Boston terrier rescue group. He's visiting Ann Arbor while his sister Katie, a Staffordshire bull terrier, recovers from surgery for a torn ACL from an animal sports injury. Katie, who is white, is the yang to Rocco's yin.