Just got on the PTR and found these guys in the journal.
Emerald Proto-Whelp (Green Proto Drake, Sholozar Basin)
Nexus Whelpling (Blue Whelp with armor, looks like a Whelp version of the Azure Drake mount. Coldarra)
Infinite Whelpling (Caverns of Time)
Stunted Yeti (Brown Yeti, Feralas)
Kun-Lai Runt (Brown Panderan-style Yeti, Kun-Lai Summit)
Harpy Youngling (Harpy, Northern Barrens)
Crow (Same skin as the Gilnean Crow, Darkmoon Island)
Lofty Libram (Purple Floating Book, Hillsbrad Foothills)
Arcane Eye (Blue Floating Eye, Deadwind Pass)
Anodized Robo Cub (Robot Bear (model currently looks borked), Winterspring)
Cogblade Raptor (Same skin as the Obsidian Hatchling, Blade's Edge Mountains)
Fluxfire Feline (Robot Cat, Dun Murogh)
Honky-Tonk (Purple Tonk, unknown location)
There is also a copy-paste of the Spectral Tiger Cub called the "Spectral Cub" which is from the Blizzard Store.