How is urea formed in the animal body ?

How is urea formed in the human body? (OR) We are not consuming urea. But in our body urea is produced. Why?

How is urea formed in the liver?

In which form the extra sugars are stored in the animals body?

In which form the extra sugars are stored in the animals body?

Where is urea formed in the body?

Where is urea formed inside the body?

Where is urea formed inside the body?