For you newbies to encountering your fist wyvern, you may think of knockout taming. You are wrong though, wyverns are only tamed by stealing their eggs and the babies must be fed with wyvern milk. You can get milk from knocking out female wyverns, and feeding them with start to tame them. Continue the process to tame you a wyvern.

More Wyvern Taming & KO Tips