In his seminal book Animal Liberation , Singer applied the principle of utilitarianism to animals. He coined the term speciesism —discrimination against individuals purely based on their species. Singer argued that equal consideration should be given to the interests of all sentient beings capable of experiencing pleasure and pain.
Utilizing non-animal alternatives (e.g., in-vitro cell cultures, computer modeling) whenever possible. 3d bestiality comics link
The abstract debate between welfare and rights plays out daily in specific, high-stakes arenas. In his seminal book Animal Liberation , Singer