Newborn “actors” often cause a lot of trouble, so instead of using them, dummies are often implemented. Most directors use animated dummies that can move their limbs but the creators of American Sniper decided to use a regular doll. In the scene where Bradley Cooper’s character takes his newborn daughter, the actor had to make the doll look alive by moving it with his own fingers. It is very noticeable but the scene couldn’t be reshot. In the end, the scene with the baby caused a lot of jokes on the Internet.