Related topics: plants · species · birds · offspring · insects

Dutch probe mystery porpoise deaths

Dutch scientists were on Wednesday probing the mysterious deaths of dozens of harbour porpoises whose carcasses have been washing up on the country's northern beaches since last week.

Animal rights groups sue to stop Wisconsin wolf hunt

A coalition of animal rights groups filed a lawsuit Tuesday to stop Wisconsin's wolf hunt this fall and invalidate a state law mandating annual hunts, arguing the statutes don't give wildlife officials any leeway to consider ...

Tracking genetically modified animals

McGill University researchers have discovered a new way to track genetically modified animals using the artificial transgenes they leave behind in the environment. The discovery provides a powerful new tool to locate and ...

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Animal

Animals are a major group of mostly multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently. Most animals are also heterotrophs, meaning they must ingest other organisms for sustenance.

Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago.

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