Here's a bit more information:
* Size: They are incredibly tiny, typically weighing only 1.8 grams and measuring around 3.6-5 cm in length. That's about the size of a bumblebee!
* Habitat: They are found in parts of Europe, Africa, and Asia.
* Diet: They are insectivores, relying on insects and other small invertebrates for food.
* Interesting fact: They have the highest metabolic rate of any mammal, meaning they need to eat constantly to keep up with their energy needs.
While the Bumblebee Bat (Craseonycteris thonglongyai) is often cited as the smallest mammal, it is very close in size to the Etruscan Shrew, and their relative positions can vary depending on the specific measurement used.