Cats and dogs can hear ultrasound.
350
A group of unicorns is called a blessing.
304
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Parrot parents "name" their children with a signature call.
112
A puppy is born blind, deaf, and toothless.
16
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