Seeing a smile from your dog will likely turn your own frown upside down. But what are dogs trying to tell you when they smile? We've got the answer.

but that's because the big screen makes it easier for them to process the images. Stock image of a dog owner taking a selfie with her pup. A dog has gone viral after attempting the biggest smile ...

with many swooning over the "adorable" dog called Lenny and its "beautiful" smile. User nibbles89 wrote, "awwwww sooooo adorable teeth smile [multiple floating hearts smiley face emojis]," while ...

There's nothing better than seeing your dog smiling and happy, but sometimes just like people, our dogs might smile for other reasons ... will be getting in some big trouble!