With little competition and few predators, the Brown Trout in New Zealand has been known to grow to epic proportions. These prize fish sometimes reaching a metre in length and weighing up to 5 kilos have developed monstrous appetites and a bloody thirsty penchant for Mice. Taken From Wild New Zealand Subscribe to the BBC Earth YouTube channel: www.youtube.com/subscription_center?add_user=BBCEarth Want to share your views with the team behind BBC Earth and win prizes? Join our fan panel here: tinyurl.com/YouTube-BBCEarth-FanPanel BBC Earth Facebook www.facebook.com/bbcearth BBC Earth Twitter www.twitter.com/bbcearth BBC Earth Instagram www.instagram.com/bbcearth/?hl=en Visit www.bbc.com/earth/world for all the latest animal news and wildlife videos This is a channel from BBC Worldwide who help fund new BBC programmes.