Which one changes your pets SPECIES only? I'd love Kirijo to be a Keeto instead of a Celinox to fit in with the rest of 'em...
[box=#444342]
Miracle Potion II changes the species. :) It's what I used to turn Commedia into an experiment pet.
ETA: But it would be MUCH cheaper for you to just change her species with a Keeto elixir and then repotion her Glacier. Miracle potions are worth tens of millions of sP.