Our Dog of the Week is, NFI Group Inc. (NFI:TSX), a global manufacturer of buses operating under several brands. NFI vehicles incorporate a wide range of drive systems including: clean diesel, natural gas, diesel-electric hybrid, and zero-emission electric (trolley, battery, and fuel cell applications). The former TSX darling has seen its share price drop 12% over the last 6 trading days and 19% over the last month. Is it a Dog or opportunity?