Weird Dreams

For some reason, I have been having weird dreams lately. They are not bad ones, just weird ones. I wonder why my mind conjures up stories while I am sleeping. This week I had a dream about a huge "dog horse" scratching my new car. Last night I was standing on the balcony of my parent's house looking for a white puppy. Then I was talking to my sister about the high prices of candy. Is this a way to reset our minds for the next day?