What times should Fido be fed? How much? Which cabinet contains the dry food? What about the wet food in the fridge?
Does Midori only swallow her thyroid pills if you stroke her chin a certain way?
Which veterinarian should be called in an emergency? Who are your friends/family who can handle Lassie in a disaster?
Just create cheatsheets for your pets and print them out. Then stick them on the refrigerator.