21 Pets With Toothy Grins

Yawn or grin? It's hard to tell, but it's still cute!

This pup is showing off those pearly whites. Lookin' good, bud!

He's feeling lazy today, but that's OK. This kitty's agenda consists of sleeping, only sleeping—hence the big smile.

Could there be a more perfect pup? Probably not!

Check out those teeth! It's a smile to be jealous of, and we certainly are.

Up is down, and all around! This smile's got us feeling topsy turvy, just like the pooch.

Don't feel like going to the dentist? Just take a look at this pretty kitty's smile, and feel motivated!

Happy to be at home with all those balloons? We can tell! That wide grin gives it away.

Uh oh, this little guy is looking a little mad. C'mon, turn that frown upside down!

He's so excited to see his owner, he just can't hide it!

What's black and white and red all over? A black cat with a perfect set of white teeth that looks like she's definitely seeing red.

That's the perfect lazy grin and we're jealous. We never get this relaxed.

This cat's trying to get some more food and is showing off that cute little grin to get it. Brilliant tactics, kitty!

A happy grin makes for a happy dog, which makes for a happy owner. It's just simple logic.

This cat's feeling some kind of excitement. What does he see? Could it be a bird?! Or possibly a mouse?!

What big teeth you have, pup. You're not feeling hungry, are you?

Happy to be outside today, kitty cat? We couldn't tell at all!

This little guy is following advice that we should all take to heart: Grin and bear it. In his case, it's belly rubs. Lucky dog!

It looks like it might be time for someone to brush those teeth. That means you, cat owner! Take care of your kitty's grin.

We can't decide what's cuter—the wide grin or the floppy ears. Let's just call it a tie!

This cat's looking a little dazed and confused, but that's OK. His smile could light up a room!