A mother dog is typically going to care for and protect her litter of puppies as soon as they are born, but this is not always true of other male dogs in the home. The mother dog is going to lick the newborn puppies immediately after giving birth. She will provide her family members with the milk and nutrition they need to survive. Male dogs, however, might react differently.
Do male dogs know there is a new litter of puppies in the house? Yes, but that doesn’t mean he will have the paternal instinct to take care of them. Instead, there are a number of ways the male might react. He may sniff the litter of puppies, want to play with them, hang out with them, or even bark or growl at them.