At this point, the milk has become yoghurt, the yoghurt has become cheese, and the cheese has become a cow again. (Is that how it works?)

(Not quite; you need to add yoghurt to the milk, in order to make yoghurt. For the rest, though, all you need are bacteria for the cheese and cow to develop naturally.)

Fed the cheese to a cow

Talk about “my dad left to get a pack of cigarettes” :)