The Basenji dog is the only dog that is not able to bark.
4
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
The seahorse is the only fish to have a neck.
12
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
There are approximately three chickens for every human on Earth.
13