In this extra, headlines-free episode of The Briefing: the federal government's plans to declare war on feral cats.

Today is National Threatened Species Day and Environment Minister Tanya Plibersek has released a plan to protect another 48 endangered species across Australia, including a program to eradicate feral cats. One part of the plan would see a nationwide night curfew imposed on domestic cats.

We're joined by Linda Stoner from Animal Liberation who argues it's the wrong approach; and Jack Gough from the Invasive Species Council who says it's long overdue.

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