Ten new rares were introduced into Western Plaguelands when patch 5.1 hit. This brings the total count of rares currently in the zone to twenty. (To see the other ten check out this post: Western Plaguelands Rare Spawns.) Each of these new rares is a beast, and therefore tamable by hunters. The only one that requires beast mastery spec to tame is Parasitus the yellow worm. The rest can be tamed by hunters of any spec.
One of these new rares is unique, and that is Heress, the yellow ghostly two-headed vulture. This bird is basically the ghost of Spiteflayer - you can see right through him, and he retains that look even after taming. You'll find him flying around just north of Felstone Field.
The rest of the rares aren't unique, but there's still some good looking ones. Alit, the dark brown owl, has a model that previously couldn't be tamed until around level 70. Warg, the dark grey worg, shares the same model and coloration as the once unique Old Cliff Jumper - another rare in The Hinterlands. Mutilax, the blue wasp, has a coloration that prior to patch 5.1 could only be tamed once hitting level 85 and heading to Zul'Gurub. Similarly, Aphis - the green and red scarab beetle, has a model and color that previously could only be found in Uldum and Halls of Origination.
Here are some screenshots of each of these rares in order by level. (Click on pictures to enlarge them.)





