Mammals

Science

Alpacas are the only mammals known to directly inseminate the uterus

The alpaca (Vicugna pacos) uses a reproductive technique never confirmed in any other mammal Zoonar GmbH / Alamy Alpacas are…

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Iconic savanna mammals face genetic problems due to fences and roads

Whether by way of Attenborough, Disney or National Geographic, the iconic scene is familiar to many. The ground trembles and…

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New fossils of tiny, toothy early mammals could be a major missing link

The living mammal family tree is full of diverse species–big blue whales, great apes, bats, rodents, and humans, to name…

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Killer whales use specialized hunting techniques to catch marine mammals in the open ocean

Killer whales foraging in deep submarine canyons off the coast of California represent a distinct subpopulation that uses specialized hunting…

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Male mammals aren’t always bigger than females

The idea that male mammals tend to be larger than females has been scientific dogma since Darwin. Bigger bodies, the…

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Killer instinct drove evolution of mammals’ predatory ancestors

The evolutionary success of the first large predators on land was driven by their need to improve as killers, researchers…

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Study reveals molecular mechanisms behind hibernation in mammals

Researchers have shed light on the molecular mechanisms underlying hibernation, publishing their findings today as a Reviewed Preprint in eLife.…

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Surprising behavior in one of the least studied mammals in the world

Some animals live in such remote and inaccessible regions of the globe that it is nearly impossible to study them…

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50 years ago, the U.S. Navy enlisted sea lions and other marine mammals

Excerpt from the December 22, 1973 issue of Science News Spike the California sea lion, a member of the U.S.…

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People, not the climate, caused the decline of the giant mammals

About 100,000 years ago, the first modern humans migrated out of Africa in large numbers. They were eminent at adapting…

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