Posted by: Rebecca Whitham, Communications Now 12 weeks old, the lion cubs are active and hardy—and outgrowing their maternity den. We’re just starting to give the cubs their first little practice sessions outside to get them ready for their upcoming public debut. We’ll share more with you tomorrow on how the private sessions are going. But today, we thought it would be fun to share the hidden side of the story—all the work that goes on behind the scenes to prepare the cubs for their outdoor adventures. Heading outside for the first time is a big milestone for the cubs. They are a rambunctious foursome and are constantly at play in the comfort of their behind-the-scenes maternity den. But we have noticed the cubs are often hesitant when it comes to new experiences. So the keepers came up with a great solution to help the cubs get ready for the experience—bring the outdoors indoor! Video : Lion cubs discover grass and sticks! Produced by Ryan Hawk/Woodland Park Zoo. To ge