Can not insert new record to database in the related table

       Just for test purposes I am trying to get the below code to work and using a foreign key constarint in my database, I have an Owners table related to a pets table "1 to many", and in the example below am trying to add the related table of pets but I get the error stated, I would appreciate some help please on what the issue is as I am new to databases, thanks

        OwnersPetsEntities context = new OwnersPetsEntities();

        Pet tmpPet = new Pet();

        Owner tmpOwner = new Owner();

        tmpOwner.Id = 1;

        tmpOwner.Name = "John";

        tmpOwner.Tel = "1234";

        tmpPet.Id = 1;

        tmpPet.OwnersId = 1;

        tmpPet.Name = tmpPetName;

        tmpPet.Type = tmpPetType;

        tmpPet.Colour = tmpPetColour;

        context.Owners.Add(tmpOwner);       "It goes past this part as ok"

        context.SaveChanges();

        context.Pets.Add(tmpPet);

        context.SaveChanges();      "Error:- Message=The INSERT    statement conflicted with the FOREIGN KEY constraint "Relationship". The conflict occurred in database"