Dogs' sense of smell: Dogs have up to 300 million olfactory receptors in their noses, compared to about 6 million in humans.
Dogs can detect diseases: They can be trained to sniff out diseases like cancer, diabetes, and epilepsy.
The Labrador Retriever is the most popular breed: It has been the most popular dog breed in the U.S. for over 30 years.
Newfoundlands are great swimmers: They have webbed feet, making them excellent swimmers and rescue dogs.
Dogs' hearing is incredibly sharp: They can hear frequencies up to 65,000 Hz, compared to humans who can hear up to 20,000 Hz.
Dogs can be left or right-pawed: Just like humans can be left or right-handed, dogs can show a preference for one paw over the other.
The world's oldest dog: An Australian Cattle Dog named Bluey lived to be 29 years and 5 months old.