THE LACK OF SCIENTIFIC JUSTIFICATION
No valid scientific reason justifies performing tests on animals, such as the Draize test on rabbits' eyes. Major physiological differences between species render these results inapplicable to humans: for example, penicillin is fatal to guinea pigs but inactive in rabbits, aspirin causes birth defects in multiple rodent and primate species while being fatal to cats, and morphine acts as a sedative in humans while stimulating animals such as horses, cats, and goats.
CRUELTY AND USELESS SUFFERING
Animals possess sentience, experience fear, and feel intense pain when subjected to torture, poisoning, mutilation, or infection with deadly diseases. Subjecting sentient beings to such abuse for commercial or research interests is morally indefensible, especially since these cruel methods persist despite their fundamental inefficiency.
MODERN AND EFFECTIVE ALTERNATIVES
Today, there are modern, ethical, and often more cost-effective substitute methods that involve no living subjects. These include the cultivation of tissues and artificial skin from human cells, as well as advanced computer simulations capable of accurately modeling toxicity and biological reactions without shedding a single drop of blood.