Gina, the back patio was like that when we moved in, but we are going to take it apart, I think next summer, and make it bigger, and also rounded, so there is not a drop off, but a gradual desent to the yard.
Gina, my DH put our last patio in at are old place, and it came out wonderful, the neighbors were always coming by to watch, and ask question's, we lived in a condo. So we have done it before. The new one will be harder, cuz of course I have a vision. Hehehehe.
aleczandra, how old is Luul, and are the other dogs in the photos yours as well? By the way Luul is beautiful! :) It's called a rig, or a wheeled cart, you can look at the risdon rig site, ours was hand made by one of the guys in the siberian husky club.