Advice for owners of male dogsYour male puppy will begin to lift his leg between four and nine months of age, a sign of the activation of his sexual drive and instinct to "mark" territory. This is a perfect age to neuter your dog and avoid the unwanted behaviors that accompany sexual maturity marking in inappropriate places, fighting and aggression toward other male dogs. Intact (un-neutered) males will mark any upright object and are especially hard on your shrubbery and trees. Some males will also mark inside the house, particularly if another dog comes to visit or if you're visiting in someone else's home. If you use your male for breeding, you can expect this behavior to get worse. Neutering your dog will protect his health, help him to live longer and be a better pet along with improving his house manners!