The bison is a large hairy mammal. It eats grass, herbs, twigs and leaves. Females weigh up to 320 kg and is 1.5 metres tall. Males weigh 900kg and are 2 metres tall. A cow gives birth to a single calf in May after about nine months of carrying the calf.
All members protect the young.
They live in groups throughout Europe. There are only 3500 European Bison left, half live in zoos. Bulls engage in head butting competitions. The bison is endangered because people are cutting down forests where they live, sulphur emissions from factories , lower water levels. Since 1985, the fund for Animals has led the battle to stop the slaughter .