If you can't pull a rabbit out of a hat, are you even a magician? It's one of the oldest and most traditional tricks in all of magic, and it's still a common fixture in many magic shows you'll see today.
Always be suspicious when you see a magician using a long tablecloth. In this case, the cloth is hiding a bagged rabbit below the table. All the magician has to do is get the rabbit out of the bag and into the bottom of the hat through a hole in the table.