That's a large part of why these smiling dog memes are so effective. The other part? They're just out-and-out funny. We challenge you to look at them without breaking into a wide smile ...

A shelter employee snapped a photo of Bitsy smiling out her window and shared ... but we hope this brings awareness to homeless shelter dogs waiting in the windows everywhere and that someone ...

Dogs always have a way of making us smile, but one pup named Grey has turned the tables by mastering the art of smiling himself. In an Instagram video shared by @greythedalmatian_, the Dalmatian ...

You can see it in virtually all breeds of dogs such as those depicted here. Smiling dogs Research has shown that most people recognize that there is no threat associated with dogs displaying this ...

Another thing that gets Kit smiling? Grass! "The first thing she ... "There are so many rescue dogs out there that need homes. Rescuing is so rewarding, and they truly do show you their appreciation.