Trinity College Dublin's biodiversity officer, Collie Ennis talks to Brendan about his pet boa constrictor, how snakes go about eating their prey and why the most successful predators on the planet have fascinated him all his life.

Brendan O'Connor has all you need for the weekend with time to pause and reflect on the week just gone. Featuring a selection of human interest, consumer and lifestyle stories, as well as keeping you up to date on the news stories that matter. Listen live Saturday and Sunday at 11am - 1pm on RTÉ Radio 1.