For that they should nominate you for sainthood. My MIL is the nicest woman in the world, but I wouldn't want her or my own mom living with my husband and me. Same for when I'm old, I wouldn't want to move in with anyone.
I'm not claiming any dependants, but its funny you mention pets, because I'm using part of my tax return (it should be here withint the next day or two direct deposit) to buy a new pet.