Pets are completely dependent on their owners. It is the owner who feeds the animal, walks with it, takes care of its health and brings it up. When you get a pet, you need to understand that you are not buying a soft toy that you can throw away in a week or two. You get a true friend who is able to be sad and happy with you. The lifespan of all animals varies greatly, dogs can live up to twenty years, and hamsters or rats up to three years, but in any case, it is required to remember that all this time only you will be responsible for their life and health.