What does it mean to dream about all different animals?

One could offer only a random guess without knowing something specific about your particular dream. For example, the kind of animals in the dream is very important, because different animals can symbolize very different things: dogs are loyal and protective, foxes are sly, elephants suggest very large problems or memories, horses represent strength and so forth. It is also important to consider what the animals are doing, where the dream takes place (home? work place? circus? jungle?) as well as taking note of the emotions you experience while the dream is occurring.