>>2461172(Cont) Some studies even suggest that plants are capable os sensing shapes and colors through specific ocelli as a form of plant vision, something that would be considered absurd and laughable in the past. Anyway back to animals, biologists will try to kill animals in a humane way when doing experiments but won’t have problem in making an invasive species sick and dying slowly if they think it is the best way to control/reduce/eliminate an invasive species with minimal collateral damage. They will do this even to mammals and we are much more certain that mammals can suffer in a form analogue to us than fishes. Picture related. Biological control methods have been attempted on mammals and these methods takes days or more to kill. In the end eliminating an invasive species is in much higher priority over moral concerns about the welfare of the invasive species.