For my new Puppy, he has been with me for one week, and has already gotten a bath. He likes to swim, and the breeder says it would be good for him, and the vet said it was o.k, so we put him in the pool. After his pool time, he decided that he wanted to dig in the dirt and pine needles(I live in a really thickly forested area, with a lot of pine trees.) He was a little mud ball, so we bathed him! I'll give him bath about twice a month.