Do dogs know when they do something bad?
How long do I wait before taking my puppy outside? Vets recommend waiting until 10-14 days after your puppy's last vaccination booster – usually at around 14–16 weeks of age – before introducing them to the wonders of local parks, beaches and walking trails.
Many believe it's instinctual behavior, harkening back to the days when your dog's wild ancestors would mask their scent to help them sneak up on their prey.
Wolves, for example, have been observed rolling in animal carcasses or the droppings of plant-eating animals, to cover up their own smell during the hunt.