Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Cats and dogs can hear ultrasound.
350
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
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
A puppy is born blind, deaf, and toothless.
16
The most expensive cow in the world was sold in 2009 for $1.2 million.
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