Squirrel heads are routinely consumed by the old-time squirrl hunters. My dad was a devotee of that delicacy. As for squirrel gravy, there is NOTHING that tops it in flavor! Fried squirrel, biscuits, and lots and losts of gravy---if I were a condemned man on death row and I had my choice for my last meal on this earth, this would be it.
I understand there has been some concern about the practice of eating the heads. Something about the possibility of catching a disease similar to "mad cow." (Climbing trees; attacking acorns and hickory nuts; robbing bird feeders?) I think it might be worth the risk.........            

Don't knock it until you've tried it.