The cat brain weighs about 30g.
167
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 group of unicorns is called a blessing.
304
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Sloths take two weeks to digest their food.
243
Female kangaroos have three vaginas.
2