There don’t seem to be many new models in Legion so I’ve combined them all into one post.
Dream Whelpling – The Emerald Nightmare
This pet requires access to the raid but shares the same model as the Stormborne Whelping (will update with the right pet when I can).
The Dust Bunny used to spawn as soon as you clicked the Dusty Rug but now a number of them spawn outside the Barber Shop.
Not sure what the respawn time is but appears to be longer than an hour.
I went to great lengths to get a pic of that Crytalline Broodling – being 105 in a 110 zone. Multiple deaths and a couple of Spirit rezzes made it possible.