Spirit makes a lot of sense and at the same time, I have so many questions like, what happened to his dad, why didn’t they make a second, who is his son, and what happened to the Indian boy?
This is my opinion btw so u don't have to agree with it. 1] his dad Strider(all black horse) died unfortunately 2] probably a good idea that they don't only cause everyone has there own stories about it and if they made a sequal it would only upset a few people who have worked hard on their stories. 3] Spirit has 3 foals, storm, geist and thunder 4] little creek probably lived his life and got new horses which are North wind and falling snow and their cousin cloudy.