Domestic pigs average a top speed of about 11 miles per hour.
182
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sharks have been on the planet longer than trees.
14
Only 3% of bird species have penises.
0
A scorpion can hold its breath for up to 6 days.
19
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1