Check if there are any official announcements about the licensing of the Portuguese dub. If not, confirm that it's only available through legal channels.

Possible challenges: Making sure the information is up-to-date regarding the availability of the Portuguese dub and torrent sites. Also, ensuring that the legal aspects are explained correctly based on different countries' laws, but general points should hold.

Finally, conclude by summarizing the key points, reiterating the importance of legal viewing, and encouraging the user to support the creators by choosing legal options.