Do Andriods Dream of Electric Sheep?

        In the book Do Androids Dream Of Electric Sheep I found it very strange that animals seem to be the most important possession to the people. Apparently owning an animal is a symbol of wealth and success. I do not understand why they would be so focused on owning an animal, that they would spend a ridiculous amount of money just to have one. They are living in a time full of nuclear fall out. It would make more sense if they used that money for food or something. After all, there was a nuclear war so one would imagine that goods are very expensive due to how rare the good might be. I am curious to read on and try to figure out why any type of animal is such a coveted possession.