Technically speaking, some of these links I wanted to share are from before Wrath of the Lich King launched. As usual, I am that far behind!
Ihlos at Big Red Rhino has been recording the heck out of pet tanking feats, so swing by when you have a chance and take a gander at the latest pet tanking exploits. His Ask a Rhino segment also recently had some nice answers one what enchantments, gems, and glyphs are more useful for pet tanking. (And may I say that I just love seeing equipment posts aimed at what will benefit the pets!)
Halfdragon at Aspect of the Druid posted a nice guide to taming the Ghost Saber. Since these lovely transparent cats no longer require strenuous leveling all the way from level 20, I expect that they will be more popular then ever. (On the other hand, they have some fierce competition from other ghostly pets now!)
I can’t remember if I posted this already or not — it’s been several weeks, but you know how bad I am at keeping up with things — but Faeldray at Petoholics Anonymous has added Wrath pet families to her Pet-o-licious Namerator. That’s a seriously handy tool for naming pets.