While the species rely on two different toxins to give their bites some bite, both poisons evolved from the same digestive enzyme through very similar changes. In both species, ...

A spat between birds at a backyard birdfeeder highlights the sometimes fierce competition for resources that animals face in the natural world, but some ecologically similar species appear to coexist ...

Evolutionary relay refers to independent species acquiring similar characteristics through their evolution in similar ecosystems, but not at the same time (e.g. dorsal fins of extinct ichthyosaurs ...

Victor Beccari couldn't shake the feeling he had seen the fossil before: it was a slab of rock containing the impression of a ...

These explorations revealed a pattern familiar to any naturalist: Where two similar species live in the same habitat, they are generally more different than species that live apart, said Tobias ...

Sometimes plants are so similar to each other that the methods developed by 18th-century scientist Carl Linnaeus for identifying species are not enough. In a thesis from the University of ...

Any specific food source that isn’t already being depleted will bring out similar characteristics in different species. And, of course, much depends on how similar the species are in the first ...

Aug. 5, 2021 — Biologists analyzed data from 2,600 lizard species worldwide and discovered that, while hundreds of different types of lizards have independently evolved arboreal lifestyles ...

The Cambrian Explosion is a landmark moment in the history of life on Earth when many of the major groups of animals first ...

Lucy and her kin weren't the only human ancestors to live in modern-day Ethiopia 3.3 million years ago, scientists say. They report that a different species, similar but not identical to Lucy's ...