Roosters can't crow if they can't fully extend their necks.
28
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
If a man could run as fast for his size as an ant can, he could run as fast as a racehorse.
108
Goldfish remember better in cold water than warm water.
29