There's nothing like a pet for a pure shot of sweetness, cuteness, happiness, and love. Studies show that petting a dog promotes relaxation, lowers stress, and positively benefits the immune system; on average, pet owners visit the doctor less.

Our pets make us happier and healthier. Whether or not they seem particularly happy, celebrities in Los Angeles like to walk their dogs. Which owner-and-dog pair do you guess make each other happiest?

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