Source for dog vision:
https://www.kaggle.com/c/dog-breed-identification

Source for bulldozer
https://www.kaggle.com/c/bluebook-for-bulldozers

From course:
https://www.udemy.com/course/complete-machine-learning-and-data-science-zero-to-mastery
Github of course:
https://github.com/mrdbourke/zero-to-mastery-ml
