I have 2 Muscovy ducklings that I got a a flea market that I wasn't told their age. The looked about a week old or less when I bought them . They are starting to get their tail feathers if that helps ? I have raised Pekins before but if I remember correctly the tail feathers came in last. Also since I'm going to keep my babies in the house until spring how do you train cats and dogs not to eat them?