Do male dogs and or wolves regurgitate food for the pups is it only females?

Yes, male dogs and wolves can also regurgitate food for their pups, although it is more common in females. Regurgitation is the process of bringing up food from the stomach and vomiting it out. In the case of dogs and wolves, they may regurgitate food for their pups as a way to provide them with nourishment and care. Both male and female wolves and dogs may engage in this behavior, depending on the social structure and dynamics of the pack or family group.