Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
The reindeer is the only mammal that can see UV light.
17
The cat brain weighs about 30g.
167
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9