Both breeds are man-made to be the best at what they do. Greyhounds are freaks. Wouldn’t have one. Wouldn’t condemn those that do, either.
I have heard that grey hounds are very sweet dogs, but I’ve not ever met one up close.
I’ve seen a couple being walked by their owners, and their musculature is just amazing.
They are freaks, but very sweet freaks. We’ve had ours a year now. Very pleasant dog to live with and when she runs full out at the dog park it is a sight to see. They are built for speed—all muscle, no fat and very thin (can be transparent in places) skin which is likely why the greyhound in the story suffered such fatal injuries. They’re built to run, not to fight.