Many of these are being added to Burning Crusade era raids for the Raiding with Leashes II: Attunement Edition achievement which requires you to collect 10 pets from Karazhan, Serpentshrine Cavern, and The Eye. The reward for collecting all of these pets? It's another pet, the still mysterious Tito. But while most of the pets discovered so far require revisiting old raids, there are also some new wild pets and drops, including the previously mentioned Unborn Val'kyr as well as mini-Gahz'rilla Gahz'rooki, the ooze Filthling, and a couple of adorably miniature Direhorns, the Stunted Direhorn and Direhorn Runt.
So what's our favorite? Well, you already know how we feel about dinosaurs.