Since dogs and humans have co-evolved, it might not be surprising that the oldest references to specific dog breeds come from some of the oldest civilizations we're aware of.

According to Guinness World Records, the oldest official dog breed in the world is the saluki, the striking Egyptian breed with roots that can be traced all the way back to 329 BC. Salukis were so revered in ancient Egypt that they were considered royals while living, and mummified after death. It's likely that the breed has been around even longer than that, with carvings found in Sumer (modern day Southern Iraq) that appear to depict a saluki dating back to 7000 BC.

According to Dogster, salukis are a lanky, muscular, balanced and refined breed that moves with the grace of a prize horse. They're speed demons, but mellow and sensitive in temperament, preferring to bond through exercise. This is a great breed for those living an active lifestyle. For example, if you're a cave person who hunts by outrunning his prey until they're exhausted — the saluki may be right for you!