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13. Cocker Spaniel
Cocker spaniels are a popular breed in general, due to their temperament. They are a very relaxed breed, allowing them to be around new people and pups more easily. Cocker spaniels are happy, energetic pups and aren’t afraid to show their affection with new owners. They also can weigh up to 30 pounds, making them fierce protectors when the need arises. With a penchant for getting lonely easy, this dog breed needs more attention than others.