This makes me wonder what the research is for whether certain types or breeds of dog prefer certain dog treats, and how individual dogs might develop a preference for one kind over another. Based on this experiment it doesn't seem like the type of meat matters much, since while the top ranked treat is chicken, his second favourite seems to be the duck one.

It's pretty interesting, but Bebop is barely treat motivated, and mostly inside. Once you take him outside, especially in open areas, he becomes more interested in tracking movement and chasing things.

I believe it's explained by the job we've asked Greyhounds to do: see movement, get released, run after it. Once you let go, that's it, the dog needs to be motivated enough by the running animal or lure, and there's no chance to reinforce the loop once it starts!

We have 4 smaller dogs (mix of chihuahua and terriers), and they all absolutely love the greenies over anything else. One of them now has a prescribed treat and he definitely isn't happy about it, and the others won't touch it.

Hardest part is now feeding them all separate dishes at regular times every day.

I'd guess texture and(or) smell might matter as much as the actual meat