RALEIGH, North Carolina, Aug. 4 (TNSJou) -- North Carolina State University issued the following news release: Researchers, including a North Carolina State University zoologist, found in a new study that three species of weasels once common in North America are likely in decline, including a species that's considered the world's smallest carnivore. The findings show there's a need to better track weasels, researchers say. With better data, they could understand the weasels' disappearance - wh  more