Anyone who has watched a rooster stalking around a farmyard might agree that there is something very dinosaur-like about ...

Yes and no: It depends on how you classify animals. There are two main classification systems – the Linnaean system which groups organisms by characteristics and the phylogenetics system, which ...

Humans are unique creatures in many ways. We have highly advanced cognitive abilities and our brains have allowed us to perform stunning feats (and plenty of terrible things, too). Still, we’re just ...

Mammals and birds have dramatically more neurons in their forebrain and cerebellum than reptiles, and neuron numbers have scaled up significantly only four times in more than 300 million years of ...

Birds and reptiles may not resemble humans in many ways, but they cry similar tears. The composition of human tears is well known, but until now, there was very little research into the composition ...

Colleen Farmer was alone one night dissecting an alligator. Her focus was on blood flow in the heart, when suddenly, a hypothesis unfolded about animal lungs. In one sweep, she realized that what ...

Aug. 13 (UPI) --The tears shed by birds and reptiles are surprisingly similar to human tears, according to a new study. However, researchers also identified key differences. The study, published ...

Brain sleep appeared early in vertebrate evolution. Researchers describe the existence of REM and slow-wave sleep in the Australian dragon, with many common features with mammalian sleep: a phase ...

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