A new study that positioned “animals are friends” to Americans had an interesting outcome. Pork became unpalatable by the subjects, while beef was still seen as edible.
…we show that the negative effect of anthropomorphism on consumers’ attitudes and behavioral intentions toward (pork) meat consumption is mediated by increased feelings of anticipatory guilt (Studies 3a and 3c). Nevertheless, no such effect was found with another kind of meat (beef), which indicates that anthropomorphizing meat animals through the friendship metaphor cannot be successfully applied to all commonly eaten species (Study 3b).
While the researchers claim there is some literature angle that may explain the difference, it reminds me of families I know in rural American communities.
They regularly eat cattle they treat as pets. I’ve never heard of pigs treated as pets that see the same end.