Pigs don’t pull sleds. They don’t hunt. They don’t play with children. They can’t manoeuvre a flock of sheep. They won’t even try to ward off a bear. They’re bad at sniffing truffles, because they eat them. They won’t run ahead of a fire engine, clearing the way. And they most certainly won’t cuddle up in camp.

Dogs are extremely versatile and have helped humans over thousands of years. Pigs, on the other hand, are tasty.

It’s not that arbitrary.

It's arbitrary because of how human-centric it all is.

You're make my point.

Isn't that life? Or society at least.

I didn't say there was any logic or deep meaning to it, just that someone being willing to sacrifice pigs but not dogs for scientific research doesn't surprise me at all. In mine, even vegetarians generally find the idea of those in others eating dogs (more so than pigs et al.) abhorrent.