I have a Cayuga drake and Khaki Campbell x Cayuga duck. The drake was over a year old. The duck was 4 months old.
Both of them are living in my guest bathroom right now (they don't like the chickens, so I removed them from the chicken coop). I spend a lot of time with them. It tool a couple of weeks, but both of them are now very affection towards my husband and me. They love to cuddle, but not be held.
The drake is very protective of "his" duck, but he's sweet nonetheless. The duck was more flighty when I got her, but became friendly even faster than the Cayuga. She started to lay about an egg a day at 5 months.
Two of my dogs would love to eat the ducks, but the other three are scared of them. The ducks are really curious about them, as well as everything else.
I love them to pieces!