When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Dolphins have names for one another.
18
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Cats and dogs can hear ultrasound.
350
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Cats sleep for 70% of their lives.
8
Condoms were originally made of animal intestines or linen.
347