airdales over in the states are used slot as coyote decoy dogs I never saw one that would actually get hold of its quarry like you'd expect a terrier to do, every pic or vid I saw they were barking at foxes, coyotes and raccoons and these are the supposed 'working' line airdales redline think they called, i read up on them from various people and none were actual game dogs , probably only good thing to add to runners is their coat and nose which is rather pointless if they cowards, would love to see a airdale doing proper work over here tho