When I was a kid growin up here in North Central Texas, a small do was referred to as a "fiest", and it included usually a terrier of some kind mix. I have a Jack Russell, and he is a squirrel hunting machine, but he is also a hog hunting machine, and a fighting machine, i.e. he doesn't play well with others.
He is fun to hang around with, and he will always find SOMETHING, even if the squirrel huntin is slow.