Bảo sao chúng khó hiểu

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Strangers are just friends you haven't met -- unless you're a naked mole rat.

Arguably nature's least beautiful (xấu nhất) animals, naked mole rats (chuột dũi trụi lông) speak in dialects (phương ngữ) local to their own colonies and are hostile to outsiders.

Naked mole rats are "really highly unusual in that they're the most social rodent (bộ gặm nhấm) that we know of," Gary Lewin, senior author and professor in neurobiology at Germany's Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), told CNN.

The furless (trụi lông) rodents can live in colonies of up to 300 members, and though there is only one breeding female per colony, "every animal in the colony has a role: Some are soldiers, some are workers, and they cooperate," he said. "It's always been a mystery (điều khó hiểu, kỳ bí) how they can be so organized."

Found in arid parts of East Africa, naked mole rats weigh around 2.8 ounces and have a body measuring up to 3.5 inches and a tail that can reach 2 inches.

Some mole rats even band together to assassinate (ám sát) their queen (nữ hoàng).

Bài trước: Đảo lộn hết cả