Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A cow produces around 200,000 glasses of milk in her lifetime.
373
Cats and dogs can hear ultrasound.
350
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
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
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
