Who Would Kill This Cutie?

Chimps, that's who.

The researchers saw 10 different chimps fashioning spear-like tools to forcibly jab at nocturnal primates known as lesser bushbabies (Galago senegalensis), which sleep inside hollow branches or tree trunks during the day. After their attacks, the chimps sniffed or licked their weapons, as if to see whether or not they shed blood.

Source.