There needs to be more information about this incident. Did a veterinarian diagnose the hooks? How did the dog die? Was it before, during or after surgery to remove them? Was there a diagnosis before the dog died? What proof was there that the dogs were fed the hooks? Just call me a little bit skeptical, many owners are irresponsible and blame something like this to deflect the scrutiny of their own negligence.
http://www.fosters.com/apps/pbcs.dll/article?AID=/20120114/GJNEWS_01/701149927
http://www.poconorecord.com/apps/pbcs.dll/article?AID=/20120114/NEWS90/120119830/-1/news
http://www.foxnews.com/us/2012/01/14/new-hampshire-dogs-eat-food-laced-with-fish-hooks-killing-1/