Your three-week-old puppy is really starting to grow and move around. His eyes should be open or opening soon. If he’s with his mother and littermates, he’s playing a bit more and still nursing. Your three-week-old puppy is learning to go potty on his own without his mother helping him along, and hopefully, you are beginning to make a separate area from his bedding area to go potty. Even with this separation, your young puppy might still get dirty either from milk, play with his littermates, or from going potty or accidents. If you need to clean him, you should know he’s still too young for a full bath but is not as fragile as he was just a week ago.
Baths and running water can be scary for some dogs, especially the very young pups. Your three-week-old puppy’s body temperature is still not yet regulated by him, so he still needs to be kept warm from the time you take his out of his nest to the time you return him. Any shaking could be from fear or from being extremely cold, both of which are dangerous for your puppy.
Enjoy these early moments of a sweet smelling puppy. It’ll be some time before your three-week-old pup smalls like a dog and is ready for a bath. Don’t put yourself in the doghouse with your puppy’s mother. Let her do most of the cleaning while you keep the bedding clean for the entire litter.