A study has found that the reason why the evolution of the first animals to appear on Earth was delayed for over 10 million ...

Earth’s earliest animals may have held evolution back because they reproduced asexually, creating low-competition communities ...

Our planet is filled with a dazzling variety of creatures that bump uglies to reproduce. Cats do it. Dogs do it. The birds and the bees definitely do it. But what were the first animals to have sex?

Most animals require both a male and a female to reproduce. But a surprising number of species can occasionally bypass that ...

Scientists say Earth's earliest animals reproduced by cloning themselves, a strategy that limited competition and slowed ...

In the framework of an international research project, a team of scientists have demonstrated for the first time that asexual reproduction can be successful in the long term. The animal they studied ...

How do animals decide when to fight and when to walk, fly, slither, or swim away? Most research on animal conflict has focused on the short-term costs of single interactions, but a pair of behavioral ...

These unusual facts about animal sexuality expose the oddities associated with animal reproduction and sexual habits in nature. Whether it’s an eccentric animal reproductive method or a strange ...

Plastic waste in the water might be stopping -- or interrupting -- some shrimp-like creatures from reproducing. In a unique study, the ability of 'shrimp like' creatures to reproduce successfully was ...

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