Heeler

The heeler is as bad as the steeler.

Source: tatoeba (13079897)

That a crowd of Sydney stealers, Jockeys, pugilists and spielers Brought some horses, real heelers, Came and put us through.

Source: wiktionary

If your dog is a good heeler, you'll find some competition in the obedience ring.

Source: wiktionary

[A] blue roan, a kind of dog that Jennifer had never seen before. She asked Tim what it was, and he said it was a "heeler", but when she pressed him to say if that was a breed or not, he could not tell her. It was a heeler because it went for the heels of the cattle and not their heads, apparently.

Source: wiktionary