First have a certain understanding of the appearance and characteristics of various dogs
Many Owners will take photos of the dogs as soon as they buy them, and then post them on pet forums that they often follow to ask whether the dogs are pure or not. In fact, such a question is not easy to answer, because from the appearance alone, we can only infer what kind of dog they are. If there are no obvious differences, it is difficult for us to infer whether the dog's bloodline is pure.
To determine whether a dog is pure or not, we must first decide what kind of dog we buy. Only after determining the breed of the dog can we further judge whether the dog is "pure". After we decide on the breed of dog, we can then match our own dog according to the key characteristics of the breed. Of course, most people judge whether a dog is normal or not based on the dog's appearance. Therefore, if the dog's appearance does not differ greatly from the standards of the breed, we consider the dog to be pure.
However, sometimes we may find that most of the conditions of this dog are consistent with the characteristics of the breed, but there are some shortcomings. For example, this dog itself should have curly hair, but the coat is relatively straight; it is originally black or chocolate-colored coat, but it has long white hair; it is originally a short-haired breed, but The coat is somewhat long. These problems may not be due to breed problems, but that these dogs may be atavistic. After all, most dogs do not have pedigree certificates from their grandparents, so it is difficult for us to ensure whether they retain the genes of other dogs. So when a purebred chocolate Teddy grows white hair on its body, we should not be too surprised, because it is likely that this problem exists in the dog's own genes. It is also difficult for us to completely avoid this problem.
In addition, many people do not distinguish between purebred dogs and native dogs. In fact, we can easily distinguish them based on their appearance. Generally speaking, the coat colors of purebred dogs are not very mixed. Even if there are several different colors, their distribution is relatively symmetrical and orderly. Most other native dogs have relatively pointed mouths, not very big eyes, and relatively flat foreheads. After some experience, it is relatively easy to distinguish them if they are not particularly rare purebred dogs.
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