According to the report, the six giant rats that just arrived in the new cage kept scurrying around. A "mouse king" with brown-gray hair emerged from a gap at the bottom of the iron fence, ran into the yard and plunged into a white cat cage with a half-opened iron fence door in the corridor. The sudden giant mouse made the cat cry instantly, and the mouse king curled up instantly. About two minutes later, the mouse king moved his tail slightly, and the cat raised its beard and cried hysterically, making the mouse king keep shrinking his head between his forelimbs. It was not until 15 minutes later that the staff dragged the mouse king out of the cat cage, and the cat showed the nature of catching natural enemies and shouted at the mouse king.
After measuring the length and weight of this "mouse king", the staff found that its head and tail were 80 cm long and weighed 9 kg. Its two pairs of orange front teeth are exposed outside its lips. Its head is fat, its eyes are small and its ears are round. At first glance, it looks a bit like a pig. Its limbs are thick and short, its forelimbs are slightly shorter than its hind limbs, and there is no web between its toes; The toe palm is bright and hairless, and the back palm can support the body to stand; The tail is conical, covered with dark gray horny scales and has sparse coarse hair. The staff said that the scientific name of this giant rat is nutria, which is produced in South America. It usually eats corn, noodles, rice, milk and other foods. Its life span is eight to nine years, and its reproductive peak is at the age of four.
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