Conservationists in Colombia, South America, recently had an unexpected surprise: the rediscovery of a mammal that hadn't been seen for 113 years. Known as the red-crested tree rat (Santamartamys rufodorsalis), the guinea pig-sized rodent was thought to be extinct until one randomly emerged from the forest at the El Dorado Nature Preserve.
Researchers Lizzie Noble and Simon McKeown were looking for amphibians and just happened to be standing right there at that very moment and were able to snap a few pictures before the little critter headed back into forest.The Presurfer