Is that all?
Once the animation was done, the long credits and ads made me feel that there should have been more. The excessive swearing and immaturity of it made me feel that my time was wasted. If you make a sequel, try to: a) make it longer & b) clean it up a little.
By the way! Seeing eye dogs would never attack like that! They are trained to avoid such things. It seemed more like a police dog than a seeing eye dog.