Step 1: Cut Up The Parts
I started with a treated 2-2x8x8'.
2- cuts on the table saw of 2" for the base frame.
6- cuts at 3/4" for the sides and top frames(Or you could use 1x2).
Step 2: Glue Up The Panels
I used a biscuit joiner and #10 biscuits.
Step 3: Add Wire And Plywood
1/2" hardware cloth(1/2"x1/2" spaced wire).
1/2" Staples with air gun.
3/8 plywood. (About 1/2 sheet)
Step 4: Screw The Panels Together
Drill pilot holes through rails to prevent splitting.
3" screws down into base and 2" to connect at the corners.
Step 5: And There You Have It!
Add a door(this was a scrap of 1" wood panel).
Hinges on the front to allow access and cleaning.
I added a 40w light bulb for some heat. These ones were only 3-4 week old and it gets cold at night.