In the heart of the Amazon rainforest, one of the most dangerous ecosystems on Earth, the battle for survival is fierce and ...

Step into the heart of the Amazon Rainforest, where nature’s most lethal predators battle every day for survival. This untamed jungle is home to some of the fiercest creatures on Earth, each vying for ...

Saber teeth took this tradeoff to the extreme, Rayfield and her colleagues report in Current Biology, becoming about as good as they could be at puncturing prey, ultimately sacrificing durability.

Saber teeth — the large fangs of saber-tooth cat fame — are fearsome. They evolved at least five times in predators that are now extinct, but there's been something of a mystery as to why.