Roosters can't crow if they can't fully extend their necks.
28
A queen bee uses her stinger only to sting another queen bee.
39
No one has ever been able to domesticate the African elephant. Only the Indian elephant can be trained by man.
39
Elephants are the only animals that can't jump.
1
Penguins can convert salt water into fresh water.
97
The Chow and the Chinese Shar-Pei are the only dogs that have black tongues.
32


