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The modern animal welfare movement has its roots in the 19th century, when philosophers and scientists began to question the ethics of animal treatment. One of the earliest and most influential advocates was Jeremy Bentham, who argued in 1789 that animals' ability to feel pain and pleasure should be considered when evaluating their treatment. The concept of animal welfare gained momentum in the 20th century, with the establishment of organizations such as the American Society for the Prevention of Cruelty to Animals (ASPCA) and the Humane Society.

The mid-20th century witnessed the birth of the modern animal protection movement. In 1975, Australian philosopher Peter Singer published Animal Liberation , popularized the term "speciesism" (discrimination based on species membership), and applied utilitarian principles to argue against factory farming and animal experimentation. This text galvanized grassroots activism and academic interest worldwide. 3. Critical Modern Arenas

: Prevention or rapid diagnosis and treatment.

Understanding the difference between and animal rights is essential for navigating modern ethical and legal discussions. While both aim to protect animals, they operate from fundamentally different philosophical foundations. 1. Key Conceptual Differences