As martial citizens we have a responsibility to not only stand up for our hunting rights but also keep hunting traditions alive by passing it on to the next generation. When it comes to squirrel hunting, there are some very practical applications and benefits as it relates to prepping/survival and marksmanship practice.
In a survival situation, minimal effort and ammunition is required to kill a few squirrels to make a hearty stew (they are also good roasted over an open fire) and if you want to improve your handgun or rifle accuracy for purposes of self-defense or hunting, instead of using a shotgun, try hunting them with a .22 pistol or rifle (like a Ruger MK IV Hunter) with open sights with head shots only.
When I was a kid growing up in central Texas, we used to have competitions on how many squirrels we could kill with head shots only using open sights. Where I lived at the time we had both Fox and Cat Squirrels and believe me when I tell you, hitting a small cat squirrel in the head with a .22 pistol with open sights 30+ yards up in a tree is no small feat!
Stay Alert, Armed and Dangerous!