Epaulette shark remain 'remarkably stable' throughout a reproduction process.

Researchers have discovered that phenylbutazone, a non-steroidal anti-inflammatory drug (NSAID) commonly prescribed in horses, can affect the ability of a mare's egg cells -- called 'oocytes' -- to ...

Some animals reproduce only once before dying. This life strategy, called semelparity, sees organisms channel all energy into reproduction. Mechanisms include stress hormone overload, sexual ...