Some Argentinian penguins are experiencing high levels of predation from pumas recolonising their historical territory. A new study involving Oxford researchers, published today in the Journal for Nature Conservation , has quantified the risk on long-term penguin population survival. An adult puma with a blood stain on the paw. © Joel Reyero 2024 Should we protect an emblematic species if it may come at the cost of another one – particularly in ecosystems that are still recovering from human