 The smallest mammal that ever lived, the shrew-like "Batodonoides vanhouteni", weighed .The smallest member of the rodent order is the Baluchistan pygmy jerboa, with an average body length of 4.4 cm (1.7 in).The smallest member of the order Carnivora is the least weasel ("Mustela nivalis"), with an average body length of 114–260 mm (4.5-10.2 in).