If people can be “young at heart,” then the somewhat silly giant dogs on this list can be considered “little at heart” - that means that Fido will dry to jump on you or sit on your lap just like he did when he was a puppy, regardless of the fact that he is now heavier than you are.
If you've got a funny photo of a giant dog that hasn't quite grown into his size yet, we'd love to see it in this list! And please vote for your favorite photo as well.
Note: this post originally had 83 images. It’s been shortened to the top 50 images based on user votes.