How long does it take for an animal to grow up?
Version 1.0 of Minecraft added baby animals and breeding. So now I've begun animal husbandry, and I'm off to a good start, I'm just growing impatient with a few of them. Specifically, they won't grow up.
How long will it take my calves, chicks, and piglets to grow up into fully murder-able cows, chickens and pigs?
On a related note, how long do I have to wait after breeding a pair of animals before I can breed them again?
Solution 1:
From the wiki Breeding/Baby animals
Baby animals grow into full sized animals after twenty minutes, one day in game time.
Solution 2:
20 minutes, or one game day. So from dawn until the next dawn (unless you sleep though the night in which case it will be two full daytimes). You can breed an animal once per game day.