Does your puppy "scoot" along the carpet or grass? You'll see him sit down hard, and then drag his bottom along the ground. Chances are he's got a sore or itchy bottom and uses this--yuck!--behavior to help clear out his anal glands.
All dogs have anal glands. The scent from anal glands serves as a name tag for other dogs to identify your puppy as an individual. The tiny sacs sit beneath the skin on each side of the fur-kid's anus and normally empty on their own. If they don't empty the material produced gets thick and basically clogs up the gland. That can lead to anal gland infection or even an abscess that your vet needs to address.
Most dogs won't have problems but the small breeds seem to have more issues with anal glands than bigger dogs. Your groomer or veterinarian can empty the stinky stuff, but you'll save time--and money--by learning how to express anal glands yourself and preventing anal gland impaction. Your puppy will thank you for it!
Image © Amy Shojai, CABC