The biting incident occurred on March 5. The dog’s behavior was described as “pathologically abnormal,” as well as “untreatable and unrehabilitatable.”

A self-described no-kill shelter in town euthanized a dog on Wednesday, about a week after it attacked a volunteer, officials said. "It is with terribly heavy hearts that we are informing the public that we had to have Sarge humanely euthanized today,

A dog at a no-kill animal shelter in North Haven was humanely euthanized today. The dog, named Sarge, was being sheltered at The Animal Haven in North Haven. The shelter previously released a statement saying Sarge had savagely mauled a volunteer unprovoked.