Yup! It's true. While they share the same two eyelids as us, they have an extra third eyelid that adds extra protection and moisture.
Scientists report that a dog's sense of smell is 10,0000-100,000 times stronger than humans. For every one smell receptor a human has, a dog has 50.
A dogs' color spectrum is limited to shades of gray, brown, yellow, and blue, which means they see the world a little differently than us!
As humans use finger prints to identify each other, a dog could be indentified by it's nose print. No dog has the same nose print.
This helps them stay cool while also giving them better grip.
There are over 450 species of dogs today, some include:
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