Is human curiosity killing the tarsier?

A tarsier has eyeballs the size of its brain, a head that can rotate 180 degrees, ears like a bat and is one of the world’s smallest primates at just four inches tall, reports AFP. It’s no wonder that tourists flock to see them.

This would be fine, except for another bizarre tarsier trait — it can turn suicidal and bash its head in when under stress by tourists.