Nat Geo WILD is gearing up for its second annual BarkFest weekend!
• Check out unbelievable videos of dogs doing hilarious stuff in World's Funniest Dogs.
• Learn the amazing ways dogs' shapes and sizes have changed over time—and how those changes help them work, swim, and protect—in How Dogs Got Their Shapes.
• Plus the very best doggy moments from The Incredible Dr. Pol and Cesar 911!
BarkFest kicks off on Friday, April 15 at 9 p.m. ET.
Watch the BarkFest cuteness overload video!