Small mammal

Small mammals, also called micromammals, are a group of mammals that are small in size and body mass. Scientists have used different weights to decide which animals belong in this group. For example, the International Biological Programme says small mammals weigh up to 5 kg. The International Union for Conservation of Nature (IUCN) uses the term small mammals for certain groups like rodents, tree shrews, and eulipotyphlans, which include animals such as moles 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 of their size and numbers, small mammals play important roles in nature, such as helping to spread seeds and control insect populations. Their presence in so many environments makes them valuable for scientists who study ecosystems and climate change.

Characteristics

Many small mammals live relatively short lives and have many babies, which leads to lots of changes in their genes. Because they are tiny, they don’t need much energy to move around, but they do need a lot of energy to stay warm. This means they eat a lot and try many different kinds of food. Their small size and the fact that they are often active at dawn, dusk, or night helps protect them from animals that might want to eat them.

List of species

The tree shrews (family Tupaiidae) are small, non-rodent animals that look a bit like primates. They belong to the order Scandentia and are divided into two groups. The Tupaiinae group is active during the day and includes five different types, while the Ptilocercinae group is active at night and has just one type, called the pen-tailed tree shrew Ptilocercus.

Research and conservation

The SSC Small Mammal Specialist Group (SMSG) of the IUCN serves as the global authority on the world's small mammals. They focus on both research and conservation efforts to help protect these animals.