Bucks (male rabbits) are responsive and enjoyable pets, but most are territorial and frequently spray urine. Aggression can be a common problem. A neutered buck is often more relaxed than a non-neutered male, making them much more responsive as a pet. Having the buck neutered means that they are free to enjoy life without constantly looking for a mate, which can mean they are likely to be much less aggressive. If introduced correctly, a neutered buck can live with a spayed female or another neutered male happily.