(Reuters) – Comcast Corp, the owner of NBCUniversal, said on Thursday it would buy Hollywood studio DreamWorks Animation SKG Inc for $3.8 billion to boost its family-friendly offerings and help it take on media conglomerate Walt Disney. The acquisition will add major children’s franchises to Universal’s film library such as “Shrek,” “How to Train Your Dragon” and “Kung Fu Panda,” which it could tap for its growing theme parks and consumer products businesses.