This is an interesting angle. Makes me wonder, do we have a moral duty to reciprocate love and loyalty, or the potential for it? And if not, what basis can there be for treatment of human beings?
Interesting question from a chicken.
My concern is not morality and neither is that the issue here.
The animals we call farm animals today came from what are considered prey animals and the process of domestication was essentialy a process of reducing fear and wariness towards our species.
Dogs came to be from an apex predator that, we speculate, found advantageous to actively associate with our species for mutual benefit.
Different origins produced different outcomes.
I think there is a much easier explanation. People keep rabbits and guinea pigs as pets. They are much more of a “prey animal” than a wild hog, for example.
Humans simply find rabbits, dogs and cats more aesthetically pleasing / cute. That’s the whole secret to it. Some animals are liked by humans and get a bare minimum of compassion and some don’t. And that’s the biggest factor in our decision of which animals deserve to rot away in their own filth until slaughtered and which can enter our homes as “entertainers”.