http://slyoyster.com

Actually, they are dying of chlamydia. The virus breaks out in Koalas anytime they become stressed out.  Which is now happening at alarming rates.  “Koalas are in diabolical trouble,” says researcher Frank Carrick, who heads the Koala Study Program at the University of Queensland. “Numbers show that even in their stronghold, koala numbers are declining alarmingly.” 

The virus can cause infections in the eyes and urinary, reproductive and respiratory tracts. It can cause blindness, infertility and death.

And I thought the Herpes virus I get from stress was bad enough.  Looks like the little buggers need to start smoking weed.