They are very delicate and emotionally-sensitive creatures that get stressed easily. The tour guides explain that tarsiers commit suicide by banging their heads against tree trunks when they get stressed, so visitors have to keep the noise level to a minimum.

Why You Should Never pet a tarsier?

Never pet a Tarsier or put it in a cage

Tarsiers commit suicide when they are held in captivity. The tiny creature also gets traumatized by loud noise and touching. Therefore, it is important to stay in silence while observing the threatened species and never try to touch one.

What happens when tarsiers stress?

When they feel too stressed out they start beating their little heads against something hard, such as a tree and commit tarsier suicide. The sanctuary has somewhere between 10-15 Tarsiers out in the trees so you can get up close and take photos and see this endangered species but no flash photography.