Animals currently make up the vast majority of sentient beings. As many as 2.8 trillion animals might be killed for food each year, and there are many more animals in the wild (Reese 2016). Although many experts agree that animals display some signs of sentience, it remains an open question which animals are sentient, and how we should compare welfare between species. Nevertheless, the welfare of animals is potentially a hugely important issue.

Despite its importance, this focus area is highly neglected: animal charities receive only 3% of charitable donations, and 99% of that money is focused on pets, who make up less than 0.1% of all domesticated animals (Reese 2016).

The area also appears to be somewhat tractable. Open Philanthropy estimates that past corporate cage-free campaigns have spared about 120 years of suffering in battery cages per dollar donated (Bollard 2016)....

(Read More)