And my happy recall, which is automatic with my dogs is "puppy"........Makes most people laugh. I call "puppy" and four huge dogs come running. the word puppy is friendly and happy, even if called loud. And I conditioned mine well and truly. it is the only thing I try to treat nearly 100%. I only miss occasionally treating. specially my baby newf, she knows that after a good "puppy", if she sits by the fridge she gets a treat even minutes later after the marker. Another is "off" and it has happened accidentally, when dogs have been barking on the fence-line, I say "off" and if they came I rewarded immediately, hence another recall word .
I carry dry treats in nearly every pocket, just for the recalls. my dogs have great recalls, even out of play and chases (bunnies).