“The best animals to keep depend on your goals and your investment of time and resources,” said Helmer. “Also, check your zoning regulations. We get a lot of calls from people who did not check with ...

Marine animals, such as the extremely simple flatworm Trichoplax, are ideal model organisms for studying the early ...

This tiny, simple animal, the Myxozoans, evolved from something bigger and more complex. We tend to think that evolution only goes in one direction— toward getting bigger and more advanced. But that’s ...