The heat cycle lasts an average of 6 to 12 days, usually twice a year in dogs, and an average of 6 to 7 days three or more times a year in cats. Females in heat can whine or cry incessantly, show nervous behavior, and attract unwanted male animals. Spayed and neutered pets are less likely to bite. 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.