There are over 340 different dog breeds recognized by various kennel clubs worldwide, such as the American Kennel Club (AKC) and the Fédération Cynologique Internationale (FCI). Some popular dog breeds include Labrador Retriever, German Shepherd, Golden Retriever, French Bulldog, Bulldog, Poodle, Beagle, Rottweiler, Yorkshire Terrier, and Dachshund. Each breed has its own unique characteristics, temperaments, and appearances.