Moose look a bit like a horse and a deer mixed together, with a long droopy nose and a flap of skin under the chin called a 'bell'. Their legs are very long, which means they can wade through deep snow and across rivers easily. They are excellent swimmers - they can swim for hours and even dive a few metres underwater for water plants.
Only the males grow antlers. The antlers are flat and shaped a bit like a giant pair of hands held out wide. Every winter the antlers drop off, and every spring a brand-new pair grows back, bigger than before. By autumn they are full size.
Moose eat huge amounts of plants - around 30 kg of leaves, twigs and water plants a day. That's like eating six hundred lettuces. They prefer to eat alone or in small groups, wandering quietly through the forest.
Moose are not aggressive, but because they are so big, Norwegian road signs warn drivers to watch out for them. Some Norwegian motorways are even built with special bridges across the road just for moose - they have grass and trees on them, so the moose feel comfortable crossing.