This is hand-made pet casket / coffin that I made for my dog.
At the end we just decided to keep it simple and bury him wrapped in his favorite blanket.
The inside dimensions are: 21-1/4" long x 11-1/4" wide x 7-1/4" tall
This was made from 3/4" thick pine wood.
It was sanded and coated with 2 coats of urethane.
All of the joints were sealed with wood glue and the inside joints caulked after being screwed together with outdoor wood screws.
The top is already prepped to be attached to the base when that time comes.