Philippine brown deer has been spotted again in Marinduque after decades. Scientists believed this species had gone extinct ...

This animal was officially declared extinct in 2012, decades after its last sighting. The last Japanese river otter was spotted in 1979 and all attempts to search for remaining members of the species ...

Once in a while, an animal shows up where it’s least expected, including places from where it was thought to have gone extinct. These rare sightings bring hope — but also fresh concerns. These are ...