Q1- Based on the puppies I've fostered as well as my own personal pups I would say that they really don't judge well on when the older one gets fed up. Not as well as an adult dog would. I've had my adult dogs get very, very testy with a pup when tired so when I see that happening the pup goes up for some rest time.
Q2- no idea. I've never had any problem with dogs humping (thank goodness) but mainly I foster females. |