re: New puppy and old dog

we brought a lab puppy into the home with a bull mastiff, both females.(both fixed)

the bull mastiff was so intrigued by the puppy and immediately went mother role on us. she helped out so much with annabelle. we never even had to potty train the lab to wait and go outside, and she never once went inside the house.

now the mastiff just goes around the backyard humping the lab.