Knowledge: Humans get paid after working as it is required by the law and really good employers even give bonuses. On the other hand, working animals do not make money after working as money as their owners will provide the basics for them.

Conversation:
I would love to start horseback riding. I have no idea what it entails though.
That's interesting, animals in sport are considered working animals.
I would be fun, but now I'm worried it's not good for the horse since it's considered work for them.
See what you mean. Some working animals are called draft animals or beasts of burden.
Really? Do they get paid like us?

Response: Oh no, they don't get paid because their owners will provide what they need.