Gorillas, like many mammal species, are a social animal. But it may be precisely this trait that is killing many of them off. According to the Environmental News Network, a recent outbreak of the Ebola virus in Africa’s Congo has kill some ninety seven percent of the gorillas that live in groups, a staggering number! A new study also shows that the deadly virus spreads directly from gorilla to gorilla, and of the one hundred and nine groups monitored over a four year period, nearly all of the big apes died due to intra-group transmission. With Ebola also able to transmit to human populations in the region, and the mortality rate among those who contract it over fifty percent, it seems this gorilla-centered disease is clearly nothing to monkey around about.