Which of the following animal is not a source of milk?

The food that we eat is obtained from mainly two sources viz., plant and animal sources.

Animals like cows, goats, buffaloes, camels, etc. produce milk. Milk obtained from these animals is used to prepare various milk products like butter, cream, curd, buttermilk, khoya, cheese, paneer, etc. Milk is a good source of calcium, protein, and vitamin D. 

We obtain eggs from a hen. Thus, it is not a source of milk.