Cats and dogs can hear ultrasound.
350
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19