Does anyone know how often a dog should nurse her pups? They are fat and healthy at 3 and 1/2 weeks. Latley though I have to force mom into the box to nurse them. She hears their cries, checks on them, and lays back on the floor outside of the box. This morning she was engourged and they were crying. In typical pyre fashion she didn't seem to want to get up. I have been putting her in with them about 5 times a day. How many times should she nurse them?