Squirrels forget where they hide about half of their nuts.
698
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Tigers can see 6 times better at night than humans.
305
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Cats and dogs can hear ultrasound.
350
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Lurch, a Watusi bull, had the largest horns in the world.
32
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