To determine your dog’s breed, write down your dog’s defining characteristics, such as its weight, height, and build. You should also make observations about the length and type of your dog's fur, the color of its hair and eyes, and the shape of its ears. Then, after you write down your dog's characteristics, use them to search for breeds on The American Kennel Club website. Keep in mind that this method won't be as reliable as a DNA test or taking your dog to a vet. For more tips from our Veterinary reviewer, including how to perform an at-home DNA test on your dog, keep reading!