I read as many of these as I could get my hands on as a kid, and the dog's name was always Snowy in the English translations...

Even then I knew the racial overtones were pretty bad, but so were an awful lot of other books aimed at younger people - hell, the early Nancy Drew mysteries are AWFUL, and the "Raggedy Ann" books my mom had were even worse.

I will, on occasion, still use a Captain Haddock-ism every now and then, and then be sad when noone gets it...