Our canine companions—What an adorable amalgamation of recessive genes

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Dogs sometimes seem like they’ve been genetically engineered in a lab to be the perfect human companion. Unfortunately, for some breeds, this isn’t too far from the truth. With demand for not just a dog but the dog of someone’s dreams, breeding has produced all manner of dog varieties — some, at a greater cost than others, as trying to emphasize and isolate specific traits can come with stowaway genetic material in the form of genetic diseases and difficulties.

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Here are five types of dogs who have had the health bred right out of them:

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