Tarsier
« The Philippine Tarsier is a tiny animal, measuring about 4 to 6 inches (15 cm) in height. The small size makes it difficult to spot. The average mass for males is around 134 grams, and for females, around 117 grams. The average adult is about the size of a human fist and will fit very comfortably in the human hand. »
« …Tarsiers rarely live long in captivity. It has been reported that some tarsiers were so traumatized by captivity that they committed SUICIDE by beating their heads against the cages or drowning themselves on the drinking bowls. »
(information et image: www.wikipedia.org)