The Saiga Antelope

http://www.rawstory.com/

Saiga antelopes used to have widespread populations throughout the northern hemisphere.  Today’s saiga antelope populations are mainly isolated to Kalmykia and Kazakhstan.

http://www.ultimateungulate.com/

 In May of 2015, the already endangered saiga antelopes faced huge die-offs, killing half of their populations in a few months. 

http://thewildlife.wbur.org/

This picture shows one heard that died off

The die-offs have now ended but the cause of the deaths is still unknown, many speculate that a bacterial disease was at fault.

Here's a link to a cute baby saiga antelope video