The white-toothed shrews or Crocidurinae are one of three subfamilies of the shrew family Soricidae. The outer layer of these shrews' teeth is white, unlike that of the red-toothed shrews. These species are typically found in Africa and southern Europe and Asia. This subfamily includes the largest shrew, the Asian house shrew, Suncus murinus, at about 15 cm in length, and the smallest, the Etruscan shrew, Suncus etruscus, at about 3.5 cm in length and 2 grams in weight. The latter is possibly the world's smallest extant mammal, although some give this title to the bumblebee bat. Crocidura contains the most species of any mammal genus. When young must be moved before they are independent, mother and young form a chain or "caravan" where each animal hangs on to the rear of the one in front. This behaviour has also been observed in some Sorex species. List of species Subfamily Crocidurinae Genus Crocidura (white-toothed shrews) Mysterious shrew, Crocidura abscondita Sanetti shrew, Crocidura afeworkbekelei Cyrenaica shrew, Crocidura aleksandrisi East African highland shrew, Crocidura allex Andaman shrew, Crocidura andamanensis Anhui white-toothed shrew, Crocidura anhuiensis Annamite shrew, Crocidura annamitensis Ansell's shrew, Crocidura ansellorum Arabian shrew, Crocidura arabica Jackass shrew, Crocidura arispa Armenian shrew, Crocidura armenica Asian gray shrew, Crocidura attenuata Hun shrew, Crocidura attila Bailey's shrew, Crocidura baileyi Kinabalu shrew, Crocidura baluensis Batak shrew, Crocidura batakorum Bates's shrew, Crocidura batesi Mindanao shrew, Crocidura beatus Beccari's shrew, Crocidura beccarii Bottego's shrew, Crocidura bottegi Bale shrew, Crocidura bottegoides Thick-tailed shrew, Crocidura brunnea Buettikofer's shrew, Crocidura buettikoferi African dusky shrew, Crocidura caliginea Canarian shrew, Crocidura canariensis Caspian shrew, Crocidura caspica Sulawesi hairy-tailed shrew, Crocidura caudipilosa Cinderella shrew, Crocidura cinderella Congo white-toothed shrew, Crocidura congobelgica Cranbrook's shrew, Crocidura cranbooki Long-footed shrew, Crocidura crenata Crosse's shrew, Crocidura crossei Reddish-gray musk shrew, Crocidura cyanea Dent's shrew, Crocidura denti Desperate shrew, Crocidura desperata Dhofar shrew, Crocidura dhofarensis Long-tailed musk shrew, Crocidura dolichura Dongjiangyuan white-toothed shrew, Crocidura dongyangjiangensis Doucet's musk shrew, Crocidura douceti Dracula shrew, Crocidura dracula Dsinezumi shrew, Crocidura dsinezumi Ivory Coast white-toothed shrew, Crocidura eburnea Eisentraut's shrew, Crocidura eisentrauti Elgon shrew, Crocidura elgonius Elongated shrew, Crocidura elongata Heather shrew, Crocidura erica Fingui white-toothed shrew, Crocidura fingui Fischer's shrew, Crocidura fischeri Greater red musk shrew, Crocidura flavescens Flower's shrew, Crocidura floweri Bornean shrew, Crocidura foetida Fox's shrew, Crocidura foxi Southeast Asian shrew, Crocidura fuliginosa Savanna shrew, Crocidura fulvastra Smoky white-toothed shrew, Crocidura fumosa Bicolored musk shrew, Crocidura fuscomurina Gathorne's shrew,