* Their skin is thinner. Puppies' skin is thinner and more delicate than adult dogs, so it absorbs scents more easily.
* They have a higher metabolic rate. Puppies' bodies are growing and developing rapidly, so they burn through food and water more quickly than adult dogs. This can lead to a stronger body odor.
* They are less likely to groom themselves. Puppies are not as good at grooming themselves as adult dogs, so they can accumulate dirt and debris on their fur. This can also contribute to a stronger odor.
Of course, not all puppies smell bad. Some breeds are naturally less smelly than others, and individual puppies may vary in their odor levels. If you are concerned about your puppy's odor, you can talk to your veterinarian.