5. Old English Sheepdog
Old English Sheepdogs have long been known as an ideal family pet — but that hasn’t stopped their continual decline, both in the United States and in their native U.K. They do require a good deal of grooming, and the big dogs are just not the ideal match for an increasingly urban population. They’re on a U.K. watch list for vulnerable breeds. Stateside, the Old English sheepdog has dropped 11 spots in the past decade.
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