21 photos that show the true meaning of 'a dog is an athlete's best friend'

Morgan Weeks
Updated
This Stray Dog Is Melting Hearts After Accompanying Marathon Runner In Grueling Gobi Desert Race
This Stray Dog Is Melting Hearts After Accompanying Marathon Runner In Grueling Gobi Desert Race

There's a reason we call dogs 'man's best friend.'

But for athletes, that's especially true. For National Dog Day, there are many reasons to celebrate the canine's companionship. From a pup's personality, loyalty and company to its unconditional love, there's not much more that beats an owner's relationship with its furry friend.

These 21 athletes really love their dogs. And after seeing these adorable photos, who can blame them?

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