Yeah I thought that was weird too about Sirius! He somehow morphed into a different kind of dog in the time between those two movies! My guess is they didn't want to have to use CGI to create the dog like they did in the 3rd movie, so they decided to just find some big black dog for the 5th movie instead.
Everybody Wants to Rule the World  is a song by the English band Tears for Fears. Originally released in the UK on 22 March 1985 it was the band's ninth single release in the United Kingdom (the third from their second LP: Songs from the Big Chair) and seventh UK Top 30 chart hit, peaking at number two in April 1985.
ABOUT the song: I (Who Have Nothing) is based on the Italian song Uno dei tanti, (English: One of Many) with music by Carlo Donida and lyrics by Giulio Mogol Rapetti.[1] Uno dei tanti was released by Joe Sentieri in 1961.The lyrics for I (Who Have Nothing) were translated into English by Jerry Leiber and Mike Stoller.ith My nose pressed up against the window paneI, I who have nothing. I, I who have no one. Must watch you, go dancing by. Wrapped in the arms of somebody else. When darling it is I. Who love you. I Love You....