SkullBunnie

Santino,” a male chimpanzee at Furuvik Zooin Sweden, is devising increasingly complex attacks against zoo visitors.

At first Santino was famous for throwing rocks and other projectiles at visitors who annoyed him. Now he has improved his technique, which requires spontaneous innovation for future deception. Researcher Mathias Osvath, lead author of a paper about Santino in PLoS ONE, explained what the clever chimp did:

“After a visitor group had left the compound area, Santino went inside the enclosure and brought a good-sized heap of hay that he placed near the visitor’s section, and immediately after that he put stones under it,” Osvath said.

After observing the chimp for days, the scientists also suspect that Santino just also “finds it fun” to bug humans. He even appears to target certain people that perhaps really get on his nerves. The attacks are all the more successful because Santino plays it cool, holding back on posturing before whipping out the stone or other projectile.