Animals
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AnimalsDissecting the dog paddle
Scientists occasionally describe the dog paddle as a “trot,” but that’s not right. When dogs swim, their complicated leg motions look more like a frantic run.
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AnimalsWild medicine
Few veterinarians are available to treat sick animals in their natural environment. Fortunately, some critters can doctor themselves.
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AnimalsThe bad-breath defense
The nicotine in tobacco that poisons some creatures can also act as a chemical defense — at least for some caterpillars. The bad breath it gives these insects repels natural predators, such as spiders.
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AnimalsWhy are bees vanishing?
Scientists find evidence that pesticides, disease and other threats are devastating bees. And that could hurt farmers big time.
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AnimalsHow seahorses use their heads
A dwarf seahorse’s head may look funny, but its shape allows the creature to sneak up on fast-moving prey.
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AnimalsLook ma — no stomach
Many animals can digest their meals without an acid-producing stomach. And research now shows they jettisoned those stomachs a long, long time ago.
By Susan Milius -
LifeCaught in the act
Scientists observe some evolutionary speed demons as they adapt over the course of just a few years to new environmental conditions.
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AnimalsMimicking mussels’ muscle
People who seek to get a grip on something — especially in wet environments — might want to take a lesson from some common shellfish. Among those who might benefit most: surgeons.
By Sid Perkins -
AnimalsKoalas’ very deep voice
Serenading males can sing some surprisingly low notes, and scientists have just uncovered how they do it.
By Beth Mole -
AnimalsAnts on guard
Tiny insects can take on big critters — from fly larvae to giraffes — in defense of their home, sweet home. And that home pays them back for this help.
By Roberta Kwok -
AnimalsTrue vampires
Forget Count Dracula or Twilight’s Edward and Bella. Many creatures have a true thirst for blood, and here’s why.
By Roberta Kwok -
AnimalsVampires’ gift of ‘blood honey’
A Maryland biologist probes the unusual dining behaviors of a blood-thirsty bat.
By Susan Milius