Whether you know it or not, you're probably no stranger to these goofy bug-eyed diving dogs or these ferocious flying kittens by photographer Seth Casteel. In fact, you've probably shared them on your timeline before. They're the kind of photos you can't help but pass along because it's impossible not to smile when you look at them. But don't take our word for it. Go ahead. Check them out for yourself, and try not to crack a grin. We dare you!

Then be sure to check out the whole  Underwater Dogs and Pounce Collections available now!

Popular Photography Books, Underwater Dogs and Pounce by Seth Casteel, Turn T-Shirt

Seth Casteel is an award-winning photographer and the New York Times Best Selling Author of  Underwater Dogs and Underwater Puppies. In February of 2012, Seth’s series of photos showcasing dogs diving into swimming pools became an Internet sensation overnight. Now with over half a million copies in print around the world, Underwater Dogs is one of the best selling photography books in history. In 2016 Seth followed up his doggy debut with  Pounce, a collection of cats and kittens mid-flight.