Never a rug! We bury our pets in a hand-dug grave. Teddy was buried in one of his favorite resting spots by the pool shed at my parents'. Franklin's ashes were right next to him. We used to have a large beech tree which served as our pet cemetery, when the pool went in we marked the graves and put the patio over them so nobody would ever dig them up. Hubby's family has a similar pet cemetery and the same rules apply. Although they have heavy equipment, all graves are hand dug in memory of that pet.
I am conflicted as to what we should do with our current pets once they pass as we don't plan to live in our current house for the rest of our lives and I don't like the idea of leaving them with strangers. We will cross that bridge when we come to it. Too sad to think of that now.
Freyja GSD- 6/21/10
Bevin (princess kitty) 08/27/07
Porsche: kitty 7/2012
Teddy (collie)- 1990-09/13/2006
Franklin (collie) 1996-06/26/2006