I Want a Dog is a 2003 animated short film, directed by Sheldon Cohen and based on the 1987 childrens book of the same title by Dayal Kaur Khalsa. It tells the story of a girl named May who wants more than anything to have a dog. She tries various strategies to get her parents to allow her one, at last settles for having a rollerskate which she treats like a dog, and in the end wins her desire.
Source: Wikipedia