It's called a "Spring Pole".
It does have some negative connotations but only because they can be used as evidence of dog fighting. Cops call it "paraphernalia" when it is combined with multiple dogs, treadmills, breeding stands, chain spaces, etc......
APBT Love it though. Your AB prolly would too.
Very simple concept. Hang a hide or something durable from a spring and let 'em hang!
I have a bungie hooked to a thick play rope that my pit chases around. I have also hooked it to a long pole and flipped around kinda like fishin' and it keeps him winded while I just stand there

I sometimes throw the bungie over a tree branch and hold on to one end and let Boo jump for it and stuff.