Dogs are capable of understanding up to 250 words and gestures and can count up to five.
It is a myth that dogs are colour blind. They can actually see in colour, just not as vividly as humans. On the other hand, they have better night vision than humans.
A dog can smell about 100,000 times better than a human.
The majority of a dog's sweat glands are between the pads on its paws.
Dogs hear around ten times better than the average human.