Practitioners in the animal welfare field, law enforcement circles, and social services arena have often maintained that childhood cruelty to animals is a forerunner to violence against people. Perez and Heide provide the first scientific examination of this relationship and examine issues of cruelty across different types of animals (pet, wild, stray, farm). The authors evaluate both qualitative and quantitative data to identify correlations between childhood cruelty and adult violent behavior, utilizing interviews and criminal records of violent and nonviolent inmates in a maximum security prison.