Mammals are a vertebrate class (Mammalia) characterized by endothermy, hair or fur, and the presence of mammary glands that produce milk to nourish offspring. They possess a neocortex, three middle ear ossicles, and a single-boned lower jaw articulating with the squamosal bone. Most exhibit viviparity with complex placentation (except monotremes, which are oviparous) and show determinate growth with advanced parental care and social behaviors. Mammalian physiology includes high metabolic rates, a four-chambered heart, and differentiated dentition, supporting ecological diversification into terrestrial, aerial, and aquatic niches across nearly all biomes.
A new AI framework, known as SHIC-XE, has been developed to detect signs of pain in horses from video analysis while providing stable, anatomically consistent explanations for its decisions. The framework was developed by ...
Biotechnology
Aug 18, 2026
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An African bat whose presence in Sicily had remained an unresolved zoological mystery for almost two centuries has now been documented on Pantelleria Island. A study published in Global Ecology and Conservation reports the ...
Plants & Animals
Aug 18, 2026
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Between 29,000 and 19,000 years ago, the planet experienced some of its coldest temperatures and drastic landscape changes at the peak of the Ice Age, during the Last Glacial Maximum (LGM), the period of most extensive global ...
The narwhal's impressive tusk has long been the subject of myths. In the Middle Ages, they were sold as unicorn horns believed to possess magical powers. Now, an international team of researchers led by Aarhus University ...
Plants & Animals
Aug 18, 2026
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For dolphins, the ocean is a world of sound. Their whistles carry social information, helping them communicate and stay connected, while echolocation—rapid-fire clicks—functions like underwater sonar, helping them navigate ...
Plants & Animals
Aug 18, 2026
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Researchers at Karolinska Institutet and Stockholm University have developed a new tool that estimates a cell's biological age by analyzing its gene activity. In an article published in the journal Advanced Science, they ...
Cell & Microbiology
Aug 18, 2026
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Mice use almost completely distinct sets of neurons for their two different types of vocalizations—the squeaks they produce when in distress or fighting and the whistle-like ultrasonic vocalizations they use when communicating ...
Plants & Animals
Aug 18, 2026
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9
A study examining how feral water buffalo interact with landscapes has uncovered the pest's disastrous impacts on northern long-necked turtles in the Top End's tropical wetlands.
Plants & Animals
Aug 18, 2026
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Biologists, zoologists and psychologists have been trying to trace the origins of human language for centuries. One well-known theory, known as the social brain hypothesis, suggests that increasingly complex social lives ...
"WHALE AT ONE O'CLOCK!" Eager cruise passengers zipping around New York's southern shores rush to the starboard bow: A humpback whale is up for air, a breathtaking sighting set against Manhattan's iconic skyline.
Ecology
Aug 18, 2026
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