Days 12 through 21, they are transformed into graycoats and then, by the end of their first month, into ragged jackets. By this time, all the furry white hair has fallen out and has been replaced by a sleek, gray waterproof coat.
Pada hari ke - 12 sampai hari ke - 21, bulu - bulu itu berubah menjadi abu - abu, lalu pada akhir bulan pertama mereka, semua bulu putih mereka rontok dan diganti dengan bulu halus abu - abu yang kedap air.