Cows can sleep standing up, but they can only dream lying down.
745
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A group of pugs is called a grumble.
10
Moths are unable to fly during an earthquake.
328
Cats and dogs can hear ultrasound.
350
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23