IN MY EXPERIENCE WITH SQUIRREL DOGS (I HAVE HAD A COUPLE) THEY HUNTED BY SITE MORE THAN SMELL ABOUT 85 % TO 15% THE BREED YOU THAT IS BEST IS OF ONE OWN PERSONAL CHOICE YES A RAT OR JACK WOULD BE FINE ONE OF MY BEST EVEN HAD SOME BRITTANY IN HIM
THE BEST MOST EXPENCIVE DOG YOU CAN BUY IS ONLY IS GOOD AS IT'S INSTINCTS AND/OR TRAINING. YOU CAN GET A SMALL BREED MUTT TO WORK SQUIRRELS IF YOU CAN GIVE HIM THE TIME AND TRAINING IT TAKES BELIVE ME I KNOW
GOOD LUCK