Join Nic, Naomi and Nick and learn all about the darker side of symbiotic relationships. Join the trio as they discuss brain controlling fungi, mobster birds, and cat-loving rodents. Last week's episode left us wondering how some caterpillars exploit their ant mutualists, listen now to find out how.

This week's ep delves into organisms that parasitise, manipulate and exploit other creatures so may not be for the squeamish.