When the Read children went over to Grandma Thora's house, a debate began about whether Killer (Thora's dog) was a "ravenous cur" or not. They decided to test Killer by putting Baby Kate next to the dog. Killer attacked Kate, biting onto her entire head. Later, Kate was hospitalized and her skull was surgically treated. She survived, but with a life-changing new appearance (The Trooper).