At least four cows have died and many more are injured after unknown assailants trespassed on an organic farm and released the cattle from their pens in the German state of Brandenburg. The culprits released scores of dairy cows and young cattle between Saturday night and Sunday morning. The cows proceeded to the concentrate feed area, where they ate up to 10 kilograms (22 pounds) of the substance. Normally, cows only receive a maximum of two kilograms of concentrate per day, the report said. Four cows died from overdose while 40 others are in critical condition and require veterinarian treatment, according to the report.