With good shipping preparation, i believe they'll be fine. I myself bought two of my wolves not being shipped, they were sent via train and motorcycle. It's already a year and my red wolf still okay (sent from another city in 2 days). As for my gold wolf, it's been 2 months and still doing fine.
That's why i love this family, i love all characins. Even though i can't have them all right now, but i believe they're all one of the most toughest species.