The brutal treatment and the heavy work, quickly ruin the animals.

The service life of a pack animal is inversely proportional to the weight of daily work. The heavier the work, the more brutal its treatment, the shorter the animal's life. Collars, handcuffs and chains hurt the leather progressively and permanently. Continuous work in the sun, tans, burns and causes cancer and skin wounds. Permanent nudity makes them more hairy. Bones and muscles wear out, animals get smaller and more muscular.

When they are younger, they smell better, their bodies and skins are more smooth and attractive. Many are used or rented as sex toys or as reproducers. Whores can be very profitable for the owners of handsome slaves.

Beauty disappears in a few years of hard work. Most idiots go blind or lose almost all their vision. With the permanent use of harnesses, their jaws are forced, losing their teeth and the ability to speak.

These three images show the ruin of this slut animal in about ten years.  Normally from the age of 40, yield and productivity drop so much that you already have the earring for the slaughterhouse.

Slaves are disgusting, smelly, lazy, slow, stupid and treacherous, on the other hand they are also profitable and very useful animals. 

If treated with adequate violence, brutality and necessary discipline can work well for many years.

Even early aged, exhausted, ruined, but strong and healthy, they are excellent slaughter animals. All the blood, its transplantable organs can be sold or donated to needy human beings, the noble parts used as meat, the rest (useless internal organs, intestines, bones and tendons) ground to make food (animal feed or sausages).

Cattle, pigs, horses and chickens have profiles, uses and different applications. Slaves are animals like others, but they work hard like horses, produce meat like beef animals, but only donate organs to humans or serve sex toys when young.