why do humans need to eat many different kind of foods to get their vitamins etc but large animals like cows only need grass to survive?

Question

why do humans need to eat many different kind of foods to get their vitamins etc but large animals like cows only need grass to survive?

In: Biology

Answer 1

1. Different animal’s digestive systems work very differently

2. You could survive on only potatoes, you would just be far less healthy and have a reduced lifespan, like many animals in the wild vs those in captivity.