In terms of other animals that could be quite net positive, large herbivores and predators at the top of their food chain with relative abundance of food (e.g. elephants, moose, whales and dolphins) would be my guess, but we did not go deep into any of those animals. Some domestic animals (e.g. well treated dogs and cats) also seem plausible to have pretty net positive lives.
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In terms of other animals that could be quite net positive, large herbivores and predators at the top of their food chain with relative abundance of food (e.g. elephants, moose, whales and dolphins) would be my guess, but we did not go deep into any of those animals. Some domestic animals (e.g. well treated dogs and cats) also seem plausible to have pretty net positive lives.