There are many recipes for the tail as well as the whole animal.
A sure sign a beaver is living in the area is a beaver dam. As shown in the bottom picture.
Your best is is to shoot one. If you do not have a firearm, an Atlatl, or slingshot or sling are your best bet for catching one. I would not recommend trying to drown one like I explained in the duck page.
The skunk is not the first thing on my list when I look for a food source but it is eatable.
Catching them is a little tricky, seeing as they will most likely spray you if you approach them.
The squirrel can be a great food source. It can be trapped, snared or shot.
You need a few to get full but they can be plentiful and fairly easy to catch.