I remember, years ago when China was suffering a rat infestation - the government decided to get the people to solve it by a campaign that touted rats as good food and a great source of protein - free for the catching.
I would shoot squirrels and eat them. My older brother would say “Squirrels are just rats with bushy tails!”
He’s right, although I imagine their food sources are different. (At least the “country” squirrels I was shooting).
Carp is one of the main game fish in lots of European countries. All we ever did was bury them, or leave them on the front steps of friends as a prank.