Many pets have separation anxiety. If you ever been separated from your pet for more than a day or two, you were probably pleasantly surprise by how much your dog has missed you. That is how dogs react to owners coming home after long or short periods. Dogs are extremely loyal, and have a hard time being away from their owners. The dog in the video below was separated from his owner for more than 3 years. Even though the distance and time were long, the dog remembered his owner. The dog’s joyous reaction when seeing its owner says it all: