Photo credit: Twisted Sifter / National Geographic

The 26th annual National Geographic Traveler Photo Contest is upon us, and here is a first look at some of the notable entries. One grand-prize winner will receive an 8-day National Geographic Expedition to Alaska for two aboard the National Geographic Sea Lion or National Geographic Sea Bird. The second-prize winner will snag a 5-day National Geographic Photography Workshop for one in Santa Fe, New Mexico, and lastly, the third-prize winner will receive a 6-day cruise for two on a Maine windjammer schooner. Click here to view the first image in this week’s funniest exam answers and funny school pictures gallery. Continue reading for a viral video of a boxer dog versus a single leaf.