If any of the joints are hard to make with the tools you have then just change the joint to a different one that’s easier. You’ll still end up with a sturdy hutch that’ll last you for many years.
Here I’m calling it a rabbit hutch but it can be used for a variety of pets. It can also be used indoors by putting a solid floor in the hutch or using a catch tray underneath.
Ready to start? Here’s a exploded view and a parts table.