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Opossum uses its defense mechanism of 'playing dead' when it feels threatened. It collapses, emits a foul odour, and becomes ...

life-size sheep replicas and philosophical musings about the interconnectedness of the two species Eli Wizevich Olney, Illinois, has taken steps to protect an iconic mammal from domesticated ...

Only vertebrate animals have real teeth, though some invertebrates have hard tooth-like plates they use to eat. One of the earliest creatures with teeth were conodonts, an eel-like creature that first ...