Dogs rolling in smelly things may seem strange or unpleasant to humans, but this behavior is deeply rooted in instinct and communication. What smells awful to us can be very interesting or even useful to a dog. One reason dogs roll in strong odors is instinct inherited from their wild ancestors. Wolves and other wild canines would roll in scents from their environment to mask their own smell. This helped them blend in while hunting or moving through territory without alerting prey. Scent communication is another key factor. Dogs experience the world primarily through their sense of smell. Rolling in odors allows them to “collect” information and carry that scent with them. In a way, it’s like bringing a message back to share with other dogs or even with their human family. Some dogs roll in smelly things simply because they enjoy it. Strong odors can be exciting and stimulating, triggering a playful or happy response. The act of rolling may also feel physically satisfyin...