Felwood - Tamable Rares added in 5.1

Thicket, the level 46 purple/blue and green moth, has a totally unique (and quite appealing) coloration. You'll find him in the very north of the zone on the mountainside just north of Felpaw Village.

Duskcoat, the level 47 black and white striped hunched cat, is the other unique pet we have in the zone. He really is quite gorgeous with his red eyes and coloration. Like several of the other "hunched" cats, he even has sort of a shiny look to him. You'll find Duskcoat just next to the road directly west of Whisperwind Grove.

The rest of the new rares in this zone are not unique, but will surely make eye-catching pets. Grovepaw, the level 45 brown warg, shares the same model and coloration as only one other mob in the game (who also happens to be a rare) - that rare is Deathmaw in Burning Steppes. The same can also be said for Fidonis the level 47 white demon dog. Fidonis sports a brand new look that he shares with Bleakheart, another new rare  in Eastern Plaguelands. 

Cida, the level 45 green and pink wasp, could only be tamed in this color prior to patch 5.1 if one ventured into AQ40 and tamed Princess Huhuran. Blackbog the Fang, the level 46 red nether ray, is now the lowest level tamable nether ray in this color. Dilennaa, the level 48 green worm, is the only tamable worm in this color outside of an instance. Dilennaa is also an exotic pet, making her tamable only by hunters level 69+ who have taken the beast mastery specialization. 

Spawn timers on all of these rares are rather long, and tend to range several hours from what I've seen so far.