Paper offers new insights into predator-prey relationships

(PhysOrg.com) -- For those old enough to remember Mutual of Omaha’s “Wild Kingdom” television series, the dynamics of predator-prey relationships seemed clear enough: predators thinned out prey populations, ...

Wolves are able to follow a human's gaze

Following others' gaze direction is an important source of information that helps to detect prey or predators, to notice important social events within one's social group and to predict the next actions of others. As such, ...

Snakes may be in decline worldwide: study

Distinct populations of snake species on three continents have crashed over the last decade, raising fears that the reptiles may be in global decline, according to a study published Wednesday.

Why chameleon tongues work in the cold (w/ Video)

(PhysOrg.com) -- In cold weather a chameleon’s metabolism slows down, but its tongue continues to work quickly to capture prey. A new study has found out why: the tongue does not rely on direct muscle contractions, and ...

Headwater stream nutrient enrichment disrupts food web

Human activity is increasing the supply of nutrients, such as nitrogen and phosphorus, to stream systems all over the world. The conventional wisdom -- bolstered by earlier research -- has held that these additional nutrients ...

Lizards change their diet to avoid predators

A scientist from the University of Salamanca and another from Yale University have shown that the presence of predators affects the behaviour of Acanthodactylus beershebensis, a lizard species from the Negev Desert in the ...

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