In Cull of the Wild, Hugh Warwick investigates the ethical and practical challenges of one of the greatest threats to biodiversity: invasive species. From cane toads in Australia to Burmese pythons and tortoises in the US, and from the Galapagos islands to Anglesey and the Outer Hebrides, The UN Convention on Biological Diversity ranks invasive species as a major threat to biodiversity on par with habitat loss, climate change, and pollution.