Sure, dog is man's best friend, but who knew kangaroo is dog's best friend?

You'll be excused for reaching that conclusion after watching this clip of a kangaroo and a pooch playing together.

You've probably never thought about a marsupial like this and a canine doing anything together, let alone them having the time of their lives, but that's exactly what's happening here.

Maybe this will start a trend of inter-species play dates. Chickens will hang out with salamanders. Monkeys will pal around with squirrels. Someone will take out a ladder so armadillos can spend time with giraffes. The possibilities are endless -- not to mention endlessly cute.