Goat: Dream Big is useful for English practice if you can already follow natural conversations. Some conversations move quickly, so learners may need to listen to certain parts more than once at first. Learners should find many familiar words and expressions, especially when the scene gives enough context. Some parts may require more focus, but the main story remains easy to follow. If your English is close to B2/C1, Goat: Dream Big can be useful for getting used to faster spoken English.
