Nelson's small-eared shrew

Nelson's small-eared shrew is a species of mammal in the family Soricidae. It is endemic to eastern Mexico.
The species was discovered by Edward William Nelson and Edward [Alphonso Goldman] in 1894, who collected a number of specimens from the slopes of the Sierra [de los Tuxtlas|San Martín volcano] in the Mexican state of Veracruz. The species was then not recorded again, and thought by many to be extinct, until being rediscovered in the same area in 2004. Its biology is essentially unknown. The Nelson's Small-Eared Shrew is considered to be one of the The world's 100 most [threatened species|world's 100 most threatened species] on the planet. Once thought extinct, they have been recently rediscovered in very small numbers. They live in high altitudes on the side of an inactive volcano. The shrews are tiny with brown fur.