Rex, the happiest dog, didn't have a family of his own. One day while he was out walking alone, he came across a family that showed him affection and invited him to stay with them. Rex enjoyed living with them and had many adventures. Rex was seven years old when he lost his vision to glaucoma. That didn't stop Rex from loving his family and enjoying his time with them. Just because you can't see doesn't mean you can't be happy.