Talk:Lucky (101 Dalmatians)/@comment-24258073-20150904103721/@comment-24865409-20161028072741

He's most likely just the smallest and weakest of the pups. The filmmakers mixed traits of his film version with traits of Cadpig (renamed to Penny in the film) from the Book.

In Dodie Smith's book, Lucky is the eldest (and in the novel, a real good big brother and leader), Patch is somewhere in the middle, and Cadpig (who's renamed to Penny in the film) is the youngest (as well as the smallest and weakest).