vivisection

The act or practice of cutting into or otherwise injuring living animals for the purpose of scientific research.

Dissection of a living body; the practice of anatomizing alive, or of experimenting upon living animals, for the purpose of investigating some physiological function or pathological process which cannot well be otherwise determined

The dissection of an animal while alive, for the purpose of making physiological investigations.

The action of cutting, surgery or other invasive treatment of a living organism for the purposes of physiological or pathological scientific investigation.

the act of operating on living animals (especially in scientific research)