Bull mastiffs were originally bred in 19th Century England to protect country estates. You'd be forgiven for thinking they were tough guard dogs – but really, they're big old softies. This litter of pups are exploring the outside world for the first time. Subscribe: http://bit.ly/BBCEarthSub Watch more: Best of BBC Earth 🌍 https://bit.ly/BestOfBBCEarth Best Animal Fights 🥊 https://bit.ly/BestAnimalFights Videos over 10 minutes ⏰ https://bit.ly/3SHJCEJ Planet Earth III 🌍 https://bit.ly/PlanetEarthIIIPlaylist Frozen Planet II ❄️ https:/bit.ly/FrozenPlanetIIPlaylist Blue Planet II in 4k 🌊 https://bit.ly/BluePlanetII4kPlaylist Taken from 'Wonderful World of Puppies' (2018) The magic continues in this second series follow up to The Wonderful World of Puppies and Kittens, with the focus purely on cute young canines this time around. Looking at life from a puppy perspective, it follows the further development stages of these young animals as they learn, love and grow. Thanks to pioneering camera rigs, tracking technology and audio tags, the series reveals all the drama, fun and high jinks of their own world as they continue to adjust to life in ours. Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this. This is a commercial page from BBC Studios. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx