The last red-crested tree rat was spotted in 1898. After 113 years, and several searches, the species was assumed to be extinct. That is, until this one showed up on a public handrail at 9:30 pm on May 4, in Colombia's El Dorado Nature Reserve. Cute! And not dead!
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.