Dogs have wet noses to help them absorb scent chemicals. The moisture on their noses helps to dissolve odor molecules, making it easier for them to detect and analyze scents.
The oldest dog breed in the world is the Saluki, which is believed to have been around for more than 7,000 years.
Dogs can be trained to detect cancer and other diseases through their sense of smell. They can detect changes in the chemical composition of a person’s breath, skin, or bodily fluids, indicating the presence of a disease