Uhg. It’s not even a funny joke- but if someone said this seriously... uhg. Dogs are, and have been popular in many cultures around the world for an estimated up to 30,000 or 40,000 years ago. Fossils identified as dog and not wolf have been found in Germany and dated to 15,000 years. More recent research and use of genetic testing indicates that peoples of the world largely domesticated dogs in parallel. Dogs in western Eurasia were already domesticated when dogs from eastern Eurasia were brought in. Dog species from eastern Eurasia show genetic links to why are believed to be ancient eastern dogs. In western Eurasia- there are bottle necks and cross breeding with eastern dogs- so western Eurasian dog breeds show the strongest genetic links to ancient eastern Eurasian dogs, and the ancient western Eurasian dogs were largely wiped out as an independent genetic line and incorporated to the eastern line.
Almost all evidence suggests that humans partnered up with dogs long before we even planted crops, let along domesticated other animals. As a matter of fact- the dog is believed to be one of of not the cornerstones of human livestock domestication.
It is very likely that humans didn’t think to take slaves until after we had domestic livestock- most evidence suggests that is the case. It makes logical sense. Before agriculture, humans were largely thought to be nomadic. Agriculture somewhat reduced or slowed that. But we didn’t have the means to support large social groups in one place, nor the means to have strong class distinctions. Slaves must be fed, slaves must be watched, etc etc. slaves take resources.
But once we had domesticated animals- the stage was set for humans to largely give up nomadic lifestyles, or to be nomadic herders. We were able to establish larger populations ina. Given area and surpluses of food and labor. Now- we can debate where the idea came from. It’s strongly likely that not only did dogs facilitate herding and thus domesticating animals- but the fact we were able to domesticate dogs may have given humans the idea to domesticate other animals. So it is possible that at a certain point- humans got the idea to basically do the same thing with other humans- use and keep them like animals. That’s debatable- but without dogs and domestic livestock and agriculture- slavery in the modern sense would not really have much benefit. If you don’t go gather with your slave- how do you know they won’t find food and eat it and leave you to starve- or run away? If you have to go with them-
You aren’t really saving time or work yeah?
But something to note is that “slavery” has had many forms and meanings in history. People often point out that before the Atlantic slave trade the Africans kept slaves. This is true of many tribes- but their version of “slavery” was much different. In a pragmatic sense- a conquering tribe or force would essentially absorb the conquered people. In most classical senses of slavery, a slave was a person of lower status in society- much the same as many minimum wage workers are today.
Slaves in history were often given wages or even their own homes. Often they weren’t treated as prisoners- they were simply used as the “low man on the pole-“ the “intern” who had to do all the work no one wanted to, things like that. Other than that, and sometimes rules about who they could marry or owning property and such- a “slave” in antiquity was often just a person of low social status bound to a master, or later, a person who didn’t have full rights of a citizen. It’s also important to note that many societies didn’t impose “slave” as a lifetime condition.
Often slaves became just regular people after a certain number of years, after enough new slaves had been acquired that they weren’t needed, or by completing certain tasks or rights of passage- these could be contests to prove ability, character, loyalty- or they could be certain tasks that showed civics- stopping crimes or doing deeds that contributed to society above and beyond what was expected of a slave. So I mean... no. Just no.
You aren’t really saving time or work yeah?