The Basenji dog is the only dog that is not able to bark.
4
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
The head of a jellyfish is called the "Bell."
6
Female kangaroos have three vaginas.
2
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Cats and dogs can hear ultrasound.
350
A giraffe's kick is so powerful that it can decapitate a lion.
216