How do cows and bulls differ in that not make milk?

That's a great question! You're right, bulls don't make milk. Here's why:

* Biological Differences: Cows are female, and females of most mammal species are the ones equipped to produce milk. Bulls are male.

* Purpose of Milk: Milk is specifically designed to nourish young offspring. Female cows have mammary glands that produce milk for their calves.

* Hormonal Influence: Milk production is primarily driven by hormones, specifically progesterone and prolactin, which are present in females. Bulls do not have these hormones in the same way.

So, the difference boils down to gender and the biological purpose of milk production.