A group of unicorns is called a blessing.
304
Rattlesnake mating sessions have been known to last more than 22 hours.
232
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
When dragonflies mate, their tails form a love heart.
22
Cats and dogs can hear ultrasound.
350
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
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402