We were joined again by Dr John Read the Pragmatic Ecologist who tells us about one of the biggest threats to Australian biodiversity. Is it cats, rabbits, cane toads or something else? Have a listen to find out. We also asked john about the pushback ecologists receive regarding the culling of native animals.

Make sure you also check out our previous interview with John when he launched his book 'Among the Pigeons: Why Cats Belong Indoors'.

Photo Cathy Zwick