Most of the perceived disadvantages are false. The most quoted of these are that the dog will become fat, lazy and useless as a guardian. Obesity is probably the most commonly quoted disadvantage of neutering. In most cases, obesity is the result of overfeeding and not exercising enough. By regulating your dog’s diet and coloric intake, you can prevent obesity in both neutered and intact males.
Neutering does not cause a change in personality, guarding instincts, intelligence, playfulness and affection.