Something that I find interesting about the Timber Wolf... proliferation.
Think about it. We've seen Timber Wolves in every Clan, at least a few. And yet we've been told that the Wolves are the only Clan that built it- no one else, even the Sharks (which may explain the Mad Cat IV later- if the Wolves were the only producer, and their production sites were wiped out in the Jihad/WoR, this may be an attempt to make a 'close enough' design). And yet, like I said, everyone has some.
It's likely that the Wolves traded the design frequently with other Warden Clans prior to the invasion, such as the Coyotes, but it makes you wonder how many Wolf-owned Timber Wolves were killed and rebuilt by Clans like the Smoke Jaguars and Jade Falcons, doesn't it? (Same for other proprietary designs in history like the Zeus).