P.S. This may sound weird but did you ever see the movie Poltergiest? Remember when the little girl's bird died (I think it was a bird - can't remember). Well they buried it in a box and she put a picture of the family in the box and said "this is for when he's lonely", she put some food in the box and said "this is for when he's hungry" and then she put a little blanket in the box and said "this if for when he' cold". That's always stayed with me to this day and I thought if I were to bury my pets, I would do the same thing.
Bookmarks