Dogs can see in color, but their color vision is not as vivid as humans. They are able to see blue and yellow, but they are unable to tell red from green.
Dogs' sense of smell is over a thousand times more acute than humans'. This qualifies them for positions in search and rescue, narcotics detection, and bomb detection, among other fields.
The only breed of dog that cannot bark is the Basenji. However, they are still capable of making other sounds like screams, yodels, and howls.
Webbed feet on the Newfoundland breed make them superb swimmers. They can go through water more effectively thanks to this trait, which also makes them excellent rescue dogs.
Dogs have a third eyelid called the nictitating membrane in addition to their upper and lower eyelids, which are similar to those of humans.
The Chihuahua breed is renowned for being the world's tiniest canine species. They normally stand between 6 and 9 inches tall and weigh between 2 and 6 pounds.
Just like a human's fingerprint, a dog's nose print is unique to them. This makes it a helpful identification tool, particularly when a dog has misplaced its collar or identification tags.
The Saluki breed is the world's oldest dog breed, with evidence reaching back to ancient Egypt. They were initially developed for hunting and were highly revered by the Bedouin people.
Dalmatians are born without spots and gradually develop them. Most Dalmatian pups are born totally white, with markings appearing after a few weeks.
Zeus was a Great Dane who was the world's tallest dog. He weighed 155 pounds and was 44 inches tall at the shoulder.