When granny has the tray of food and is calling for somebody, the scene cuts to outside with Jethro, Elle May, and her dogs sitting in their car. Watch as the dogs run into the house. In the lower part of the screen are the hands of the trainer clapping to get the dogs to run into the house.
When Margret is leaving Milburns office, Claud gets up on his back legs. You can see the shadow of the trainer, waving his arms on the office door.