There are plenty of holidays for all kinds of occasions, but National Puppy Day is by far the cuddliest.

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National Puppy Day took place on Monday this week, giving people all over a good excuse to share pics of their furry friends online. All over the world people have begun chiming in, sharing photos and commenting on the ones they like.

Early on in the day #NationalPuppyDay began trending on Twitter, with everyone from high-profile celebs to dedicated animal organizations getting involved and making the world a more adorable place. It doesn't matter what you do or where you're from, a cute puppy will always be a cute puppy. That's what these images say.

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Sure to brighten your day, here are the 10 best National Puppy Day photos posted on Twitter this year. Some breeds might look familiar, while others are a little more unusual. Some of the puppies are pretty big, while others are just tiny little newborns. With their inquisitive faces and loving stares, these little babes are drawing "ooohs" and "ahhhs" from all over the web.

Go ahead. Try not to be moved by these endearing pics.