Diesels were up since 8 weeks, at least. Our new girl (which I have yet to introduce
) Lilly, she had one up, and one half up. I taped it for one day, or one night I should say, and it stayed up. I think it depends on if they are completely floppy, or if they are starting to come up. If they arent up at 8 weeks, I would personally tape. I dont think it would hurt anything. Someone correct me if I am wrong though.