Shrews are the smallest of the insectivores, one species [Suncus etruscus] of southern Europe and Asia is one of the smallest known mammals.
[Soricdae] are divided into two sub-families [Cocidurinae] white toothed shrews and the [Soricinae] red toothed shrews.
There is still a considerable need for research both at the taxonomic and ecological levels. For many species no details of their ecological requirements are available, many being known only from a single location and a few records.