You can breed them as soon as they're grown up c: Or right away if you caught a wild wolf; they just need to be an adult and not on cooldown (and the profile will tell you if there's a cooldown and how long it'll be before it can breed next).
(Edited)
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✤As the stars appear, I know I'll find you staring at the sky Pointlessly reaching for some light you hope to guide your sorry way ✤
You can’t put your progen up for stud, however any other wolf is able to put up for stud. You can still breed him with your other wolves through his or other wolves profiles though.
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Opposite LW time + 6 Hrs. Collector of red and green wolves and cat companions. I give away pups including progen pups! > Golds Free Puppies!