You've never seen a dog this excited about going for a walk

Kernel, the two-year-old Great Dane, and Mack, the six-month-old Vizsla, share a very close friendship.

As you can see from the video above, Mack's excitement levels go through the roof when he knows he's going out for a walk.

But Mack's way of showing his delight goes much further than simply wagging his tail. Instead, he displays his happiness by repeatedly sticking his head into the mouth of his Great Dane companion. What other friend would let you do that?