Any with human help, including humans, but most choose death
Discussion
My immune system genocides entire microbial species fairly often.
The cereals and legumes I eat require the mass poisoning of insects, fungi and little rodents to be harvestable.
My son as a baby was briefly prescribed a fully synthetic infant formula, that's the closest I've seen to a no-kill diet.
We could have solved all that stuff before moon landings if we chose to