Adolescent Behavior in the Intact Male Dog

Beginning around six months of age, the male dog's testosterone level is elevated to several times its adult level. This imbalance can cause a variety of behavioral challenges---especially in dogs that are reproductively intact. (See References 3, 4)

  1. Urine Marking

    • Reproductively intact male dogs are more likely to urine mark than their female or neutered male counterparts. This may occur even after a dog has been housebroken. (See References 1)

    Fighting

    • Adolescent male dogs commonly growl, snap or even fight with other dogs. This is no cause for alarm, unless the dog seriously wounds its opponent, which can indicate aggressive tendencies. (See References 2)

    Sexual Roaming

    • During adolescence, intact male dogs develop a strong natural desire to mate. They may escape from their owners in an attempt to find females. (See References 4)

    Mounting

    • To appease their strong hormonal urges, intact male dogs sometimes mount dogs, other pets or people. Owners can usually remedy this problem by isolating the dog when it exhibits the behavior. (See References 5)

    Possessive Behavior

    • Adolescent male dogs can be extremely possessive of their homes and owners. Proper training can help them channel these instincts positively. (See References 5)