If you have a dream about a dog sitting then this means that you need to pay attention to your surroundings. Dogs are not known for being patient. On the contrary they are known for being wild, for jumping around, for demanding attention and playtime. To have a dream in which a dog is sitting means the dog is standing sentinel for you. You too should stand sentinel and be ready for something to happen. Sometimes patience is key to discovery.
If you have a dream about a dog shadow then this means that something fearsome will confront you soon. A dog shadow is known for being a strong symbol because of the fear that it carries behind it. You have to avoid this fear at all costs; don't allow yourself to be afraid of what happens here.