"Dog vs. Dog" is back, and four dogs remain in the running for top dog.
This morning, two of the four finalists appeared on "Good Morning America" and did their best to win your vote and capture the top dog crown.
Facing off were Kona and Happy Jack.
Most dogs are taken for walks, but Kona, from Boulder, Colo., turns tradition on its head and takes his adopted doggy brother, Joey, out for walks, leading Joey by the leash.
Kona was adopted from a shelter, and he overcame a rare case of chronic canine myositis, a condition that makes it hard for a dog to open its mouth to bark or eat.
Video sent into the Dog vs. Dog contest shows Kona and Jack getting around - running through the fields, out in the forest and having fun in the snow - all with Kona leading the way. Their unusual routine has made them local celebrities.
Going up against Kona is Happy Jack from Wauconda, Ill. When he's not working as certified disaster relief and therapy dog, Happy Jack likes to do tricks.
Video submitted to the contest shows the agile pup jumping through hoops, running the steeplechase, weaving through poles while walking on his hind legs, and, get this - saying prayers and going to bed.
So what do you think? Which dog is your favorite? Vote now on GoodMorningAmerica.com on Yahoo.
The winner of today's match-up will be announced Tuesday during "GMA," and we'll also show you the final two dogs in the competition.