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The world's smallest mammal: the shrew, only 4 cm in length and weighs only 3 grams of shrew shrew (sound: qu jing) is a small mammal, looks like a mouse, but in fact it has nothing to do with mice, it is the earliest animal with a placenta, appeared in the Cretaceous Period, can be said to be the ancestor of all mammals.

author:Dawn shimmering

<h1 class="pgc-h-arrow-right" data-track="2" > shrew is a small mammal that looks like a mouse, but in fact it has nothing to do with mice, it is the earliest animal with a placenta, appeared in the Cretaceous, can be said to be the ancestor of all mammals. </h1>

The world's smallest mammal: the shrew, only 4 cm in length and weighs only 3 grams of shrew shrew (sound: qu jing) is a small mammal, looks like a mouse, but in fact it has nothing to do with mice, it is the earliest animal with a placenta, appeared in the Cretaceous Period, can be said to be the ancestor of all mammals.

The body length of the shrew is only 4-6 cm

Shrew is mainly distributed in western Europe and Russia, China's northeast and the middle and lower reaches of the Yangtze River are also distributed, it is 4-6 cm long, weigh 3-5 grams, you really read it right, this little guy is so big, the weight is almost the same as a few melon seeds! This guy has very small eyes and very poor vision, but his sense of smell and hearing is extremely developed, he has four legs and toes, and feeds on insects, earthworms, etc.

The world's smallest mammal: the shrew, only 4 cm in length and weighs only 3 grams of shrew shrew (sound: qu jing) is a small mammal, looks like a mouse, but in fact it has nothing to do with mice, it is the earliest animal with a placenta, appeared in the Cretaceous Period, can be said to be the ancestor of all mammals.

The shrew looks very cute, like it came out of the comics

From morning to night, the shrew is always eating non-stop, it has to eat 3-4 times its own weight every day to ensure body temperature and normal metabolism, is a veritable foodie.

The world's smallest mammal: the shrew, only 4 cm in length and weighs only 3 grams of shrew shrew (sound: qu jing) is a small mammal, looks like a mouse, but in fact it has nothing to do with mice, it is the earliest animal with a placenta, appeared in the Cretaceous Period, can be said to be the ancestor of all mammals.

Shrews look very similar to rats

Although the shrew is small and looks very cute, its salivary glands can secrete a toxin, and humans will be hot and swollen by its bite fingers, which will last for several days before disappearing, and if its venom is released to mice, it can instantly paralyze rats!

The world's smallest mammal: the shrew, only 4 cm in length and weighs only 3 grams of shrew shrew (sound: qu jing) is a small mammal, looks like a mouse, but in fact it has nothing to do with mice, it is the earliest animal with a placenta, appeared in the Cretaceous Period, can be said to be the ancestor of all mammals.

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