This picture has stayed in Noah Adams' mind. Dr. Kim Sprayberry/Hagyard Equine Medical Institute hide caption

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Rancho Corral de Tierra Park in Northern California recently became part of the National Parks System. Now dogs are required to be on leash, angering some community members. Amy Standen/KQED hide caption

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Fruit flies will drink alcohol from fermenting fruit to kill off wasp parasites that can grow inside of them. Jan Polabinski/ hide caption

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A family of bears investigates a Dumpster behind a diner in Pomona, N.Y., last fall. Black bears are becoming more common in populated areas around the United States. Eddy Philippe/AP hide caption

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A man commutes to work on the New York City subway while enjoying breakfast in 2005. A New York state senator has proposed a law that would ban eating on the subway, in hopes of driving away rats. Shiho Fukada/AP hide caption

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The Japanese whaling vessel Yushin Maru No. 2 shoots its water cannons at a Sea Shepherd craft during an altercation on Feb. 12, 2012. The photo was released by the Sea Shepherd Conservation Society. Billy Danger/AP hide caption

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Jose Barrera holds Alma Dulce, his 2-year-old xoloitzcuintli, or Mexican hairless dog, one of six breeds that will compete for the first time in the 136th Westminster Kennel Club Dog Show in New York this week. Mike Segar/Reuters/Landov hide caption

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A government veterinarian worker sprays anti-bird flu disinfectant over birds and fowls at Medan city market in North Sumatra province. Indonesia reported its second human death from bird flu this year in late January. AFP/Getty Images hide caption

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