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Dormouse

life science Maturity 5-7 Next article →

A dormouse is a small rodent from the family Gliridae.

Dormouse
Dormouse

These animals are found in Africa, Asia, and Europe. Most species are nocturnal, meaning they are active during the night. They are arboreal, which means they live in trees and are very good at climbing. Dormice have a great sense of hearing and use sounds to talk to each other. They are omnivores that eat many things like nuts, fruit, berries, and insects.

Muscardinus avellanarius - 1700-1880 little dormouse, sleeping in the winter nest
Muscardinus avellanarius - 1700-1880 little dormouse, sleeping in the winter nest

One very special thing about dormice is hibernation. This is a long period of deep sleep. In places with cold weather, they can sleep for six months or even longer. To get ready, they spend the summer eating a lot to build up body fat. This stored energy helps them survive while they sleep. Sometimes, they might wake up for a short time to eat food they hid nearby.

Muscardinus avellanarius - 1700-1880 little dormouse, sleeping in the winter nest
Muscardinus avellanarius - 1700-1880 little dormouse, sleeping in the winter nest

Scientists have studied these animals for a long time. The earliest known dormouse, called Eogliravus, lived in France about 48 to 41 million years ago. During a time called the Miocene, about 17 million years ago, dormice were very common in Europe. There were 18 different groups and 36 species living there then. They were even the most common type of rodent in Europe at that time. Some dormice lived on islands and grew to be very large. The biggest, called Leithia, lived on Sicily and Malta and was as big as a rabbit.

Today, there are 28 living species of dormice.

Dormouse
Dormouse

About half of these species belong to a group called Graphiurus, which lives in Africa. Most dormice are small, weighing between 30 and 150 grams. Their bodies are usually between 7 and 20 centimeters long. They can live for up to five years in the wild. Baby dormice are born without hair and keep their eyes closed for 18 days. They usually grow up after their first long sleep.

Humans have had many different relationships with dormice throughout history. In ancient Rome, people ate them as a special treat. They even used a special box called a glirarium to raise them. In Slovenia and parts of Croatia, they are still eaten as a delicacy. Long ago, people in England thought dormouse fat could help you sleep. Now, some people keep them as exotic pets. The woodland dormouse is the most common one you might see in a pet shop.

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