Learn to identify the signs of sexual assault or abuse toward animals. Yes, the topic is highly repugnant but it is necessary that animal lovers be aware of bestiality (sex crimes) against animals. Watch for signs and smells of infection, abrasions, fur loss, fur matting, blood, and/or semen around the animal’s rear end. Abusers will attack either or both male and female dogs and cats, even very young animals, sometimes using objects in addition to a penis.