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

For humans, feces are last on the list of things we’d place near our mouth. In the animal world, that reaction does not ...

It’s not considered polite to talk about it, but we all do it. Some of us are in and out so quickly that nobody would even know we were gone. Others quietly get up from the sofa, tuck a newspaper ...

Defecation is commonly treated as a universal feature of animal life, a visible outcome of digestion and metabolic turnover. In biological terms, however, waste handling takes multiple forms, shaped ...