The seahorse is the only fish to have a neck.
12
When cats are happy, they may squeeze their eyes shut.
10
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
The Basenji dog is the only dog that is not able to bark.
4
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8