1. Panting

Dogs only have sweat glands between the pads of their feet. They dissipate the majority of their heat by panting.

2. Nose Prints

Both cats and dogs noses are unique, like human fingerprints. It’s becoming more common to take nose prints of dogs in case they’re ever lost or stolen. Hmmm, interesting.

3. Squishy Face

Dogs, with more squished faces such as pugs, boxers, and bulldogs tend to have more health problems. The structure of their faces makes them more prone to respiratory problems, dental problems, and other health issues.

4. Sense of Smell

A dog’s sense of smell is more than 100,000 times stronger than a humans. While humans have about five million scent receptors in their noses, a bloodhound has up to three hundred million. He knows where you hid that bone.

5. Color Blind

Dogs are not actually completely colorblind. Not only do they see in shades of gray but they can also see distinct colors,  just not as well as we do. Many experts believe that dogs have fewer retinal cone cells and because of this, they are red-green colorblind. Dogs are dichromatic, which means they only see two primary colors – blue and yellow.