The mother Tyrannosaurus breaks her fast to provide a kill to feed her young. Even though they are small and vulnerable, the young T-Rex's already have a fierce competitive streak. Subscribe to BBC Earth: http://bit.ly/ydxvrP Broadcast in 1999, Walking with Dinosaurs set out to create the most accurate portrayal of prehistoric animals ever seen on the screen. Combining fact and informed speculation with cutting-edge computer graphics and animatronics effects, the series took two years to make. BBC Earth Channel: / bbcearth Latest BBC Earth videos: http://bit.ly/y1wtbi Visit http://www.bbcearth.com for all the latest animal news and wildlife videos BBC Earth Facebook / bbcearth (ex-UK only) BBC Earth Twitter / bbcearth This is a commercial channel from BBC Studios. Service & Feedback https://www.bbcstudios.com/contact/co...