This should be a standalone plugin or perhaps just incorporated with WorldGuard, but many servers will need the ability to limit the number of wolves per player. Each player having like 30 wolves in SMP will be awesome for a few days, then turn really obnoxious. Many people with many wolves might also lag parts of the server up. We need a plugin to limit wolves and if someone is feeling adventurous, also allow players to trade/sell/buy wolves with iConomy/BOSE support. It'd be best if EssentialsProtect or WorldGuard picked this up and just included it in the package.