Whales and dolphins can't taste anything other than salt.
11
Condoms were originally made of animal intestines or linen.
347
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Penguins have a gland above their eye that turns saltwater into freshwater.
12
The seahorse is the only fish to have a neck.
12