http://www.foxnews.com/us/2014/11/16/vets-save-german-shepherd-pup-who-chewed-off-own-foot/
This link and others seem to suggest it was an accident.
I agree with you and can only hope this was some kind of freak accident. Otherwise I can’t say here what needs to be done to them.
I can tell you, once I was hooking up a dog very similar to this one in the article. I used a lapse on the leash that hooks on the collar ring. The dog raised it’s paw and somehow the lapse got caught on the webbing between it’s toes...Total freak accident. I wound up have to take a power drill to drill out the pin hold the lapse. It took me 25 minutes to drill out the pin...Trying to control the dog with the drill noise, vibration etc was not fun.
Just an insane freak incident.
Whoop, meant to say ‘clasp’..