Life is so unfair, what should I do?

I am a dog, my job is a household pet and security guard. I lead a dog's life. My job is very demanding. I wave my tails at humans, flatter them to make them feel God-like, cheer them up, fetch their things and their stupid ball, act as their shrink, guard their property. They keep a cat, too. It's a very well fed and very lazy cat. It does nothing. It just lays there, and it recollects humans only when it wants something - food or toys, or amusements. It then meows pitifully and gets what it wants. It has no duties. I work hard for my dog food. When there was mice in the house, they did not ask a cat to dispose of it, they called an exterminator! But when someone tried to break in, it was my job to stop the burglar; they did not call a security company, they said "Why keep a dog and bark ourselves?" It is so very unfair. What should I do?