Whoever is concerned about animal welfare is often overwhelmed by the many causes being addressed asking for support, mostly by asking for donations.
There is a study by the Animal Charity Evaluators which evaluates where the most animals are being harmed and which causes make the most difference if successfully implemented. Not surprisingly, the gruesome fact is that factory farming leads to the highest numbers of animals killed. If it were possible to eradicate these murder machines billions of lives could be saved. Investing in causes linked to the end of these man-made hells would save more lives than with any other cause.
The study is not about the quality of life for sentient beings, but only about the quantity of animals in need.
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