African wild dogs use a sneeze-based voting system — the more sneezes during a pack meeting, the higher the chance the group agrees to go hunting.

In captivity, ravens can learn to talk better than some parrots. They also mimic a variety of sounds, like car engines, toilets flushing, and other animal and bird calls.

About 1 in 10,000 people (0.01%) are born with situs inversus, a rare condition where internal organs are arranged in a mirror-image reversal, with the heart and stomach on the right and the liver on the left.

Flowers communicate with bumblebees using electricity. If a flower hasn’t been visited recently, it emits static that tugs at tiny hairs on a bee’s back, signaling available nectar.

The loudest shout ever recorded was by a primary school teacher who yelled, 'Quiet!' at 121.7 decibels - loud enough to cause hearing damage. This record has held strong for 30 years.

Salt was so valuable in ancient times that it was used as currency. The word 'salary' comes from the Latin 'salarium', meaning the allowance Roman soldiers received to buy salt.

The two sides of aluminium foil have different appearances simply due to the manufacturing process. Both sides work identically for cooking or storage.