It's Study Sunday! According to research by Dr. Peter Borshelt, it was found that by the time…

Adrienne F.

It's Study Sunday! According to research by Dr. Peter Borshelt, it was found that by the time puppies reached 5 months of age, a good 50 percent of them were already lifting their legs, and then, by the age of 8 months, 50 percent of them were urine marking. Then, by the age of 24 months, the great majority of dogs (90-95 percent) were found to be respectively urine marking and leg lifting.

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