The Cojack is created by crossing the purebred Jack Russell Terrier with the purebred Pembroke Welsh Corgi. It is considered a hybrid dog, meaning it is not purebred, however the lineage is known. Where as the term mutt is used when a dog has an unknown lineage.
Some claim hybrid dogs are healthier, because you are mixing up the gene pool. Many breeders of hybrids believe in what is called the heterosis effect and hybrid vigor. Vigor means, "Physical or mental strength, force or energy."
Others disagree, claiming you are still crossing two first generation dogs. If you breed two dogs carrying the same genetic defect, the defect will be dominant in the dog.
Regardless, of size or lineage, all dogs are a mammal of the Canidae family, of the order Carnivora. Canis lupus familiaris, which is a domesticated subspecies of the wolf. Commonly referred to as a canine, dogs have instincts, which we as humans have a responsibility to fulfill.
One of these instincts is to migrate. To fulfill this instinct in our dog, we need to take them for a daily walk. How to walk your dog in a way that fulfills this instinct.