Join Date: Dec 2007
Location: Ontario Canada
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Photo Submissions 112 Times in 110 Posts
from Dr. Ian Dunbar
Puppy License To Misbehave
Testosterone is the hormone which makes male urine smell male. Thus, the “maleness” of a dog's urine depends on level of testosterone in the body. In most mammals, adults have much higher testosterone levels than youngsters. This is not true for dogs though. Plasma testosterone levels start to rise by the time the male pup reaches four to five months old, whereafter testosterone levels reach a maximum at ten months of age and then fall to adult male levels by eighteen months of age. At the ten-month peak, testosterone levels in adolescent male dogs may be as much as five to seven times greater than adult levels.
Urine odor, therefore, betrays the age of young male dogs. The odor of puppy urine is quite distinct. The puppy's size, shape, sound, color, behavior and especially, his smell, all advertise the youngster's age. A rollover with a leaky urethra is a means for the pup to display his puppy license to older and/or higher ranking individuals: "Yo! Sniff this urine. See, I'm just a young puppy and don't know any better. Please don't harm me. I didn't mean to jump on your tail and bite your ears. He! He! He!" And sure enough, most socialized adult dogs are quite tolerant and lenient towards young pupskis. However... once testosterone levels start to rise, the male puppy's license to misbehave is rudely canceled. In fact, by ten months of age, adolescent male urine smells sooper-dooper, ultra-mega-hyper-male, informing all adult dogs: "Why lookyhere. This young urinater must be a developing male adolescent — a potential thorn in the side of social harmony. Let's educate the young fellow right now, while we still can." And sure enough, most adult dogs (especially males) start to harass developing male pups to put them in their place before they become a significant challenge on the social scene.
Dave and Molly
Ian Dunbar was awarded the Outstanding Achievement Award from I.P.D.T.A. Here's a picture of me accepting the award on his behalf.
Member of IAABC ,International Association of Animal Behavior Consultants , Member of Pet Professional Guild