There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Denmark has twice as many pigs as there are people.
66
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
The head of a jellyfish is called the "Bell."
6
Lobsters have blue blood.
476
A group of pugs is called a grumble.
10