Though i do see the need to do this for when they are OVER populated, but not now. Even ten a better way could be designed instead of poisoning them, to have a much quicker and less painful death. The lions are almost if not already on the going extinct list. What is the need to do this, other than to have a lion pelt, or teeth, or the claws of them. I would rather have the actually creature then features off of them. 
