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
Lobsters have blue blood.
476
Cats and dogs can hear ultrasound.
350
Denmark has twice as many pigs as there are people.
66
A group of kittens is called a "kindle".
10
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6