Cockroaches can make group decisions. When 50 cockroaches are presented with 3 shelters that can only house 40, they’ll split evenly into two groups and leave one shelter empty.

“Evil” behaviours can be categorised into four basic groups: machiavellianism, psychopathy, sadism and narcissism. They are far from being unique to our species.

The eternal flame at Bullhead City, Arizona, only lasted until city officials received a US$961 gas bill. It has been relighted after complaints by veterans groups.

The polar bear is one of the only large land mammals that has absolutely no fear of man. It will stalk people at every chance and has been known to charge large groups of hunters, sometimes into heavy gunfire, not slowing down even after its vital organs have been hit repeatedly.