Should we kill violent people? Is every criminal killed? We invaded the habitats of many animals, no animal deserves to be killed, if we keep to ourselves not breaking into their habitats everyone is safe. There is no such thing as a violent animal...they follow instincts...If rapists, murderers and many other criminals are not murdered why kill Animals who are Just living their lives... Every one should keep to their own space...humans are violent, Animals only follow instincts...therefore there is no such thing as a violent animal.