Two closely related viruses that have been introduced to northern Spain in recent years have already led to the collapse of three different species of amphibian -- the common midwife toad, the common toad, and the alpine newt -- in the protected area of Picos de Europa National Park. In all, six amphibian species have suffered from severe disease and mass mortality and researchers say that the viruses appear to be on the move.

Source: Amphibian communities collapse in wake of viral outbreak