I've recently been made aware that one of the only ways to detoxify PFAs forever chemicals from the body is through breast milk... which is why it unfortunately (as it's so freaking crucial) may be toxic to offsprings. I'd be curious to see some testing for Pfas done on dairy products... as if this theory is correct and animals are exposed to PFAs just by living on Earth rn that might be their detoxing mode.

Probably not your cup of milk but if you get inspired maybe do a test experiement?! I'd be curious of the results.