You can watch "The Lorax" on several streaming platforms depending on your location:

• In the US and UK, "The Lorax" is available to stream on Amazon Prime Video and Amazon Prime Video with Ads. You can also buy or rent it on Amazon Video, Apple TV, Microsoft Store, and other digital stores

• It is available for purchase or rental on Google Play Movies

• Netflix offers "Dr. Seuss' The Lorax," but availability may vary by country. For example, it is available on Netflix Germany but may not be accessible in all regions

• It is currently not available on platforms like Disney+, Paramount+, Joyn, or others listed for Germany

Therefore, the most reliable options to watch "The Lorax" online are Amazon Prime Video (streaming or purchase/rental) and Google Play Movies. Check your local Netflix catalog to see if it is available there.