It's the 10th annual National Dog Day! We are celebrating by sharing some of our favorite dog videos and photos.

National Dog Day founder Colleen Paige says she started a day for dogs "for their endearing patience, unquestioning loyalty, for their work protecting our streets, homes and families as Police K-9's, Military Working Dogs, Guide Dogs and Therapy Dogs." So without further ado, here's a shameless roundup of adorable dog videos, starting with a pool party!

Dogs splash and play in a bone-shaped pool at a 'country' doggie day care in Michigan. VPC

Dogs' hilarious reaction to a levitating hot dog:

Magic and dogs mix once again in a hilarious new video where dogs have no idea what to make of a levitating hot dog. Jen Markham explains. Video provided by Buzz60 Newslook

This dog has an elephant best friend, and they love to swim:

Bella and Bubbles are an unlikely pair for best friends. A rescued elephant and a dog are best buddies who love to swim and play together. For more go to www.myrtlebeachsafari.com VPC

Meet River, an inspiration to a Minnesota town:

River is the town's favorite dog who happens to have two legs and two wheels. VPC

Long-jumping dogs compete in a dock diving contest:

More than 150 dogs made a splash at Stone Mountain Park near Atlanta, competing to qualify for the "Dock Dogs" World Championship. The dogs run down a platform and leap into the 40 foot pool. They are judged on distance, height, and speed. VPC

Dog kisses in slow motion:

Some adorable dogs lent their lips (but mostly their tongues) to a great cause at this kissing-for-charity booth. If that isn't cute enough, Ball State Journalism at the Indiana Fair captured the slobbery smooches in slow motion.

Here are reader photos of their pups. You can share your pup pictures, too.

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