Some protection but foxes and coons will work around dogs. My sister and friends have lost garden and chickens to both, despite the help of dogs out often.
If you want to do less math figuring out how much area you have - google earth has a measuring option that will tell you in a wide variety of units
Edit to add, like if you have enough discalculia that it is difficult to estimate how big a 5 car garage is, much less how many of them might fit...
How rare depends on region.
Similar to places that don't have basements (that took some adjusting), or mudrooms (WTH?), or windows that don't open much less the house have an attic fan. After living in such places, it becomes obvious why. Except the mudroom. Still see no conceivable reason not...