I was watching stephen colbert the other day and he was making fun of this situation and people giving koala's chlamydia. Seem's strange to me that chlamydia, a std would cause koala's to go exstinct.
"While nobody knows how koalas first came to be infected with chlamydia, some researchers speculate koalas may have been exposed to infected mammals at some point in their evolution. The disease spreads among koalas through male-male and male-female sexual contact".
http://www.aolnews.com/weird-news/ar...mydia/19632335
colbert video
http://www.colbertnation.com/the-col...oalas---purell
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