Nicole's pit bull Britney Dawg knows lots of tricks: She can open an ice chest, get a drink out and bring it to Nicole. She can also play dead, high-five, high-10, crawl and bow. But her parlor tricks don't make up for her lack of social etiquette. Britney is aggressive toward people and other dogs. Then, Jerry and Rose's dachshund mix Boo exhibits aggression at feeding time and when it comes time to trim his nails. He has lunged and bitten them several times.