Here are some interesting facts about cows:

Vision

Cows have a near-panoramic view of almost 360 degrees, but they can't see directly behind them. They tilt their heads to look at things in front of them. 

Sleep

Cows can sleep while standing, but they actually lie down to sleep. They can lock their ligaments, muscles, and tendons to doze while standing. 

Emotions

Cows can show a wide range of emotions, such as joy, sadness, fear, anger, and anxiety. They can recognize the faces of other cows and humans, years after meeting them. 

Teeth

Cows have 32 teeth, but most of their teeth are on the lower jaw. They curl their tongue around grass instead of biting it. 

Personality

Cows have individual personalities, and common personality traits studied in cows are boldness, exploration, and sociability. 

Temperature

Cows prefer temperatures between 40˚ and 65˚F. 

Stomachs

Cows have one stomach divided into four compartments. They belong to a group of animals called ruminants. 

Color blindness

Cows can see shades of yellow/brown and vibrant blues, in addition to black, white, and various shades of gray.