Dog Breeds A-Z List Explore the ultimate dog breeds A-Z list, featuring detailed profiles of every breed. From playful companions to working dogs, discover breed characteristics, sizes, temperaments, and care requirements. Whether you’re looking for a small dog, a hypoallergenic breed, or a loyal family pet, our comprehensive guide helps you find the perfect match. Often described as man’s best friend, dogs have lived alongside us as treasured companions for 35,000 years. With over 400 distinct breeds, no other land mammal comes close to such variety in size and appearance. dog, (Canis lupus familiaris), domestic mammal of the family Canidae (order Carnivora). It is a subspecies of the gray wolf (Canis lupus) and is related to foxes and jackals. The dog is one of the two most ubiquitous and most popular domestic animals in the world (the cat is the other). Dogs were domesticated from wolves around 15,000 years ago. New evidence suggests that dogs were first domesticated in East Asia, possibly China. Over time, the dog has developed into hundreds of breeds with a great degree of variation. Looking for the perfect pup or just love learning about dogs? Check out our Dog Breeds Chart with names and pictures, including 100+ types of dogs from A to Z! Great for breed identification and discovering unique traits of each breed. Learn about the veterinary topic of Description of Dogs. Find specific details on this topic and related topics from the MSD Vet Manual. Explore all dog breeds and find the perfect match. Complete list of AKC recognized dog breeds. Includes personality, history, health, nutrition, grooming, pictures, videos and AKC breed standard. Have you ever wondered what the most popular dog breeds are? We've put together this list of the 25 top dog breeds. Find out which comes in at the top! Dogs perform many roles for humans, such as hunting, herding, pulling loads, protection, companionship, therapy, aiding disabled people, and assisting police and the military.