Rattlesnake mating sessions have been known to last more than 22 hours.
232
The Basenji dog is the only dog that is not able to bark.
4
Gorillas can catch human colds and other illnesses.
205
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Dogs have been man's pet for over 14,000 years.
224
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
Mosquitoes don't just bite you, they also pee on you.
11