Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
When cats are happy, they may squeeze their eyes shut.
10
A lion in the wild usually makes no more than twenty kills a year.
186
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
The colossal squid has the largest eyes in the world.
4
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
The largest earthworm on record was found in South Africa and measured 22 feet.
151