Sheep outnumber humans in New Zealand 15 to 1.
33
Most tropical marine fish could survive in a tank filled with human blood.
54
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
A rodent's teeth never stop growing.
16
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
The ant can lift things 10 times its own weight.
33
The oldest recorded elephant lived for 82 years.
213
Rats can tell the difference between two human languages.
49