We have three options here:
All dairy products are actually non-dairy equivalents that happened to just take the original names.
There are equally intelligent milk-producing species that either keep themselves in a milk producing state or are otherwise forced into said state.
Or
There is an unseen slave caste of lesser intelligent members of species that are harvested for their products.
Sir Terry Pratchett. Actually, probably counts as multiple because the opening to The Shepherds Crown makes me bawl like a child, and it’s pretty much a step-by-step guide for mourning.
Discworld has been my comfort series for a long time. I have read most of the books more times than I can count. Spent months tearing through multiple a day.
Of course, his condition was known amongst the fans, we had all known it was going to be sooner than later, but it felt like a long chapter of my life was closed. I had looked forward to every release, cherished them. The man’s work had been beside me through some of the hardest times, always bringing a smile back to my face.