Man Documents His 15 Year Friendship With A Dog Named MacKenzie In Two Heartwarming Photos

They're both getting gray.

Reddit user Petey09 posted a side-by-side photo of himself and his uncle's dog, Mackenzie, 15 years ago and today. Sadly, Mackenzie passed away, but it's clear the two had a solid friendship. Through thick and thin, and yes, even gray. 

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