Cows can sleep standing up, but they can only dream lying down.
745
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
Cats and dogs can hear ultrasound.
350
The cat brain weighs about 30g.
167
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456