Team Logo. The Massachusetts Mad Dogs were a team in the Northeast League. They had the league's worst attendance. After not playing for 3 years, they were revived in 2002 as the Berkshire Black Bears. Retrieved from "https://prosportsteams.fandom.com/wiki/Massachusetts_Mad_Dogs?oldid=12508" Categories: Northeast League Teams Teams in Massachusetts Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.