Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
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
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The reindeer is the only mammal that can see UV light.
17