I do have to add even if there only pets and will not be eaten you do need a plan for when the time comes and there sick for me if there not suffering and in pain I will let nature take its course and try and give them the most loving peaceful exit I can. how ever if there suffering and in pain my uncle has agreed to do the deed for me in the most respect way possible. I did talk to my vet about the method of putting them to sleep and found out that is not a very easy thing to do with birds or rats. So you should have some kind of plan for the need arises.