The animal rights activist protested animal cruelty and research in ""a dog’s tale was Mark Twain.
Because He was so opposed to vivisection that he sent lengthy and passionate letters to the London Anti-Vivisection Society about the needless brutality and cruelty of animal testing and its lack of efficacy. On multiple instances, he publicly denounced cockfighting and bullfighting.
The most well-known American of his era to support the cause of animal welfare was Mark Twain. The Stanford English professor Fishkin, the author of Mark Twain's Book of Animals, looks at how Twain's love of animals and support for them can be shown across many of his works. One of the earliest proponents of animals in America was Mark Twain.
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