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The Etruscan shrew has a body length of about 4 cm (1.6 in) excluding the tail. It is characterized by very rapid movements and a fast metabolism, eating about 1.5–2 times its own body weight per day. It feeds on various small vertebrates and invertebrates, mostly insects, and can hunt individuals of the same size as itself.
All shrews are tiny, most no larger than a mouse. The largest species is the Asian house shrew (Suncus murinus) of tropical Asia, which is about 15 cm (6 in) long and weighs around 100 g (3 + 1 ⁄ 2 oz) [2] The Etruscan shrew (Suncus etruscus), at about 3.5 cm (1 + 3 ⁄ 8 in) and 1.8 grams (28 grains), is the smallest known living terrestrial mammal.
The American pygmy shrew is the smallest mammal native to North America and is one of the smallest mammals in the world, just slightly larger than the Etruscan shrew of Eurasia. Its body is about 5 cm (2 in) long including a 2-cm-long tail, and it weighs about 2.0 to 4.5 g (0.07 to 0.16 oz). [ 9 ]
The Kitti's hog-nosed bat (Craseonycteris thonglongyai), also known as the bumblebee bat, from Thailand and Myanmar [80] is the smallest mammal, at 29–33 millimetres (1.1–1.3 in) in length and 2 grams (0.071 oz) in weight.
Chevrotains are the smallest hoofed mammals in the world. The Asian species weigh between 1–4 kg (2–9 lb), while the African chevrotain is considerably larger, at 7–16 kg (15–35 lb). The Asian species weigh between 1–4 kg (2–9 lb), while the African chevrotain is considerably larger, at 7–16 kg (15–35 lb).
Pygmy marmosets are the smallest true monkey, with a head-body length ranging from 117 to 152 mm (4.6 to 6.0 in) and a tail of 172 to 229 mm (6.8 to 9.0 in). The average adult body weight is just over 100 g (3.5 oz) with the only sexual dimorphism of females being a little heavier.
What is the smallest mammal in the world? Answer: The Etruscan shrew. This dangerous bird has been known to be lethal to humans with its powerful, taloned kick. Answer: Cassowary.
It is the smallest species of bat and may be the world's smallest mammal, depending on how size is defined. The main competitors for the title are small shrews; in particular, the Etruscan shrew may be lighter at 1.2 to 2.7 g (0.042 to 0.095 oz) but its body is longer, measuring 36 to 53 mm (1.4 to 2.1 in) from its head to the base of the tail. [4]