Here sleep on this elevated hunting platform, it's portable, around $200 and it can go up to 10 feet high. I don't want anything happening to your dog. You can also use it to shoot porn at cool angles on the property
You can buy it here
If you become a club member with them it's $197
Here are some of it's features:
Sturdy steel construction
4' x 4' foot platform
Flip-up trapdoor
9"w. steps with handrails
500-lb. weight capacity
8 universal mounting brackets
10'h. to platform