How do you differentiate between a bull and a cow?

A bull looks more masculine than cows do, often with a large muscular hump on the neck, and more muscular features around the shoulders and rump. Bulls have a broader forehead than cows do, which is sometimes curly, often signifying fertility. Where cows have udders, bulls have testicles that look much like human male testicles but are much larger. They also have a sheath where the penis is "stored," which is often covered in longer hair than the rest of their body. The sheath is located in the bottom-middle of their belly, and is where they also urinate from. This area is also called the navel.

Cows, on the other hand, are more feminine in their features in comparison to bulls. They are often smaller, with a less broader forehead, no hump on their shoulders (except for the Brahman breeds), and are less muscular in appearance. They do not urinate from the navel area like bulls do, but from their rear ends. Below their anus they have a bit of a pronounced vulva, which is where they urinate, concieve, and give birth to a newborn calf from. They also have udders, a bag of skin with four teats on each quarter, from where milk is developed and excreted by the newborn calf or by a milk machine.