When you see a giraffe in a dream, then such dream represents the necessity to look wider around yourself. Perhaps the dream suggests to look around yourself in order to get the overall picture of the surroundings you have. If you were riding a giraffe in a dream, then it shows your wish to be noticeable around the others. There is a possibility that you wish to get attention from the others.
Read more about dreaming of Giraffe in other dream meanings interpretations.