Hemingway, owned by pop star Ashlee Simpson-Wentz and "Fall Out Boy" bassist/lyricist Pete Wentz, is an English bulldog beloved but aggressive. The couple is expecting their first child and are concerned how he would react when the baby arrived. They hoped getting bulldog Rigby would might help, but when the five month old joined, Hemingway's dog aggression escalated. Cesar also rehabilitates Cricket, a retriever who attacks anything between him and his food. (thetvdb.com)