Unaltered animals often exhibit more behavior and temperament problems than do those that have been spayed or neutered Neutered males are less likely to roam the neighborhood, run away, or get into fights. Your pet will be healthier. Neutered females are less apt to develop breast cancer and uterine infections. Males will be less likely to suffer prostrate gland problems. You will not have to deal with spraying or staining.
Female dogs experience a flow of blood as part of the reproductive process.
Unneutered male cats mark territory by spraying objects in or out of the house with strong smelling urine. If neutered before they are a year old, cats rarely develop this problem. There aren't enough good homes for the dogs and cats we have, and more are born every day. Each year, an average of 15 million pet animals are turned in to municipal and private animal shelters. The rest, some 11 million dogs, cats, puppies, and kittens must be put to death because no one wants them.