Condoms were originally made of animal intestines or linen.
347
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Cats and dogs can hear ultrasound.
350