The cat brain weighs about 30g.
167
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456