These are the smallest mammals in the world, according to science

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In the giant animal kingdom, there is diversity in shapes, sizes, and adaptations. Setting aside insects, it’s surprising to know that the smallest mammals can weigh just over 1 gram.

Thanks to science, a large number of these specimens are known with details of sizes and weights. Here is the list of the 10 smallest ones.

From the majestic blue whale, the largest living being ever to exist, to creatures so tiny they fit in the palm of a hand. The variety is astonishing.

The smallest mammals: the list

Pygmy shrew.
Pygmy shrew, one of the smallest known mammals.
  1. Etruscan shrew (Suncus etruscus)
  2. Hog-nosed bat (Craseonycteris thonglongyai)
  3. Long-tailed planigale (Planigale ingrami)
  4. African pygmy mouse (Mus minutoides)
  5. Baluchistan pygmy jerboa (Salpingotulus michaelis)
  6. Madame Berthe’s mouse lemur (Microcebus berthae)
  7. Pygmy possum (Cercartetus lepidus)
  8. Pygmy shrew-mole (Neurotrichus gibbsii)
  9. Why are some mammals so small?
  10. Small mammals and other curiosities

The fascinating world of small mammals shows how nature adapts in amazing ways to ensure survival in different environments.

The tiny size is not only a curiosity but also an evolutionary tool that allows them to thrive in unique conditions. However, animal diversity is not limited to size alone. 

What is the Etruscan shrew, the smallest mammal

  • Average weight: 1.5 to 2.5 grams.
  • Length: 3.6 to 5.2 cm (excluding the tail).
  • Distribution: Europe, Asia, and North Africa.

It is the lightest mammal in the world. It is an insectivore with an extremely fast metabolism. This forces it to consume the equivalent of twice its body weight daily. Its heart rate can reach up to 1500 beats per minute, a record among mammals.

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