Pet allergy is one of the most common, due to their proteins, and not all breeds produce it in the same way.
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The 6 Most Hypoallergenic Dog Breeds

Pet allergy is one of the most common, due to their proteins, and not all breeds produce it in the same way.
Knowing the breed of a mixed breed dog from its traits and behavior is an almost impossible task. Even modern genetics faces a challenge in this field.
A pedigree is an official document that records an animal’s genealogy. It certifies the lineage and purity of an animal and demonstrates its breed. It requires knowledge of the animal’s past or a genetic test to verify its genealogy.
A dog breed is a group of dogs that come from common ancestors and have been selectively bred. They have very similar characteristics in behavior and appearance, and a closed and shared genetic heritage.