This egg was given out for Creature Release Week in January of 2011.
Wisnaker eggs have a hard, reptilian outer shell. Naturally, the hatch-rate of Wisnakers relatively high because of their durable eggs that can withstand moderately extreme circumstances. But the most recognizable thing about Wisnaker eggs are the two green, fur-like patches that are very soft. For whatever reason, removing only one green, fur-like patch will cause any Wisnaker egg to prematurely hatch.
Wisnaker babies are relatively helpless because they do not have their wings. They are forced to squirm and crawl around on surfaces, zigging and zagging like a snake, to move. Wisnaker babies, as a result of crawling everywhere, develop very strong underbelly muscles (in addition to forearm muscles) because this is their only means of transportation.
Wisnaker adults are much more independent. Once Wisnakers evolve, they can finally transport themselves by using their wings. At first, newly-evolved Wisnakers seem just as helpless as when they were babies. That is because they are: they've used their stomach and forearm muscles all of their lives. It takes several months to fully strengthen their wing muscles. But once a Wisnaker's wing muscles are developed, they can travel dozens and dozens of miles at a time without stopping to rest.