Small mammal

Small mammals, also called micromammals, are a group of mammals that are smaller in size and body mass. Scientists use different ways to decide which animals belong in this group, but one common rule is that small mammals weigh no more than about 5 kilograms. This group includes many familiar animals like rodents, such as mice and rats, as well as tree shrews and insectivores like hedgehogs and shrews.

Most of the world's mammal species are small mammals. They live in many different places, from forests and deserts to mountains and cities. Because they are small, they often help in nature, such as spreading seeds or keeping insect numbers balanced.

These animals are important for scientists who study the environment and for people who care about protecting wildlife. Learning about small mammals helps us understand more about the world around us and how all living things are connected.

Characteristics

Many small mammals, like shrews and hamsters, live short lives and have lots of babies. This helps their numbers change a lot over time. Because they are tiny, they don’t need much energy to move, but they do need energy to stay warm. This means they eat a lot and can find food in many places. Their small size and the fact that they are often active at dawn, dusk, or at night helps keep them safe from bigger animals.

List of species

The tree shrews (family Tupaiidae) look a bit like small primates but they are not rodents. They belong to the order Scandentia. There are two groups of tree shrews. The Tupaiinae group is active during the day. It includes five types such as Tupaia, Anathana, Dendrogale, Lyonogale, and Urogale. The other group, Ptilocercinae, is active at night. It has just one type called the pen-tailed tree shrew, Ptilocercus.

Research and conservation

The IUCN has a group called the SSC Small Mammal Specialist Group (SMSG). This group helps protect small mammals around the world. They study these animals and work to keep their numbers safe. Their work is important for understanding and preserving small mammals like mice, rats, and shrews.