A highly poisonous animal X which inhabits crop fields is commonly known as the friend of the farmer. It eats up pests like Y and saves the crops from damage. The animal X is killed in large numbers to obtain its Z which sells in the market at a high price. What are X, Y and Z?

A highly poisonous animal X which inhabits crop fields is commonly kno

1.	A highly poisonous animal X which inhabits crop fields is commonly known as the friend of the farmer. It eats up pests like Y and saves the crops from damage. The animal X is killed in large numbers to obtain its Z which sells in the market at a high price. What are X, Y and Z?
Answer» A highly poisonous animal X which inhabits crop fields is commonly known as the friend of the farmer. It eats up pests like Y and saves the crops from damage. The animal X is killed in large numbers to obtain its Z which sells in the market at a high price. What are X, Y and Z?