Surprisingly, genome comparisons have failed to resolve a major question in animal evolution: Which living animals are the descendants of the earliest animals to evolve in the world's oceans?

American Music Theatre hosted Wild World of Animals with Grant Kemmerer & Friends on Sunday. The show featured about 13 animals ranging from reptiles and birds to mammals. The diverse lineup follows ...

Animals, from worms and sponges to jellyfish and whales, contain anywhere from a few thousand to tens of trillions of nearly genetically identical cells. Depending on the organism, these cells arrange ...

We pride ourselves on being the most intelligent of animals, the ones who dominate from the sky to the depths of the sea. This claim is not false, but it omits an essential aspect: the other creatures ...

All animals are related to each other, but comb jellies — a marine invertebrate found in oceans around the world — are the most distantly related to all other animals, shows a new study in Nature.

When a kitten is walking in a dangerous environment, it will gently step on the terrain with its feet to estimate the friction or bearing capacity. Based on this experience, the kitten can then ...

Deep, deep in geologic time, some 600 million or 700 million years ago, the very first animals evolved on Earth. Their closest relatives that still live today include sponges, sea anemones and comb ...