Of all the animals domesticated by man, the cat is the least domestic. It is an animal that is highly adaptable to all the environments in which it lives, but at the same time it never loses its animal spirit and its independence. It is a strict carnivore and its energetic needs are the result of an evolutionary adaptation to a very specialized diet. Knowing these needs and their eating habits can help us to offer them a better diet. Perhaps it is because of the above that the cat occupies the 2nd place in the world as a companion animal for humans, especially for those living in large cities. The cat has qualities to be an excellent companion animal and in many cases it has also been demonstrated the extraordinary "Positive Pet Effects" that it produces in its owners, such as increasing self-esteem, improving balance and personal safety. The change of habitat of modern societies has achieved a close contact with pets, which has increased the demand for products and services for them.