I LIKE TO SQUISHY SQUISHY. Man, I'm glad you got over your Sporebat aversion Tyger, even if temporarily! I loffs me some Squishy! Anyway life got superhectic and I raged at idiots, and then I misplaced my screenshots D: But I return!
I was questing in Uldum when I got the call for a yellow hyena. I saw that there was an unconfirmed spawn at the end of an escort up in Desolace, and being on the same continent, I figured that'd be closest and started heading there. Then, getting stuck on a tree in Feralas, I realized that Dire Maul was a lot closer and abandoned my heroic impulse for the easier, guaranteed tame :P
I had a better taming screenshot but chose this one because it illustrates one of the many issues I have with the hyena model: Hyenas (in the real world) are known for their powerful jaws, whereas in-game, their jaws are just flat-out unhinged!
Choosing a name for a pet before getting to know them is quite difficult for me; their personality is likely to be influenced by their name if the one comes before the other, and a name I don't really like or which doesn't fit will affect how much I end up liking or not liking the pet. And with that in mind, meet Chell; named after the protagonist of the single-player portion of my current rabid fangirling,
Portal 2 (gimmegimmegimmegimme!). It occurred to me later that the name sort of doubly-fit; back in Classic (and later in Wrath for a brief period of time), there was a rogue in my guild named Chellbin, nicknamed and later shortened to Chell. I try to avoid naming pets after actual people because it gets confusing, but as Chell-hyena is yellow and provides a bleed debuff, and Chell-rogue was, well, a rogue (with bleeds and a yellow-named class), it works (though I often found myself unsure of my hyena's gender)! Though the yellow hyena is not native to Uldum, the Vir'nal Oasis seems especially fitting for the breed.
Hyena models have several problems. Overall, I quite like the look of their head from the upper jaw to the ear; the ears are slightly rounded and wide set, the eyes are black with a bright shine, and the fur texture on the eyebrows is quite nice. That's about all I can say that's nice about them, though. Their lower bodies are a dark, grey-brown that makes it look like they were swimming around in a mud-puddle (with the dirty reputation hyenas have earned over the millenia, maybe they have!) and, combined with the odd offset nature of their lower jaw and their 2D teeth (which, to be fair, aren't THAT bad on their own) reminds me of a stubbled, half-shaved, potbellied underworld dweller. The crest of hair along their backs is also a 2D texture, and suffers from some pretty savage pixellation. Finally, their paws are quite large, which I usually find entrancing, but in this case, they feel more like hooves, especially from the sides, and the wrists and ankles change sizes as the model goes through its various animations—sometimes normal, but often incredibly thin and flimsy looking.
Chell has both a distinct walking animation and a running animation, similar (identical?) to those of wolves, coyotes, and foxes. He couldn't seem to decide whether she wanted to walk by my side or jog ahead when I was walking, though thankfully she kept to her run animation when the run/walk toggle wasn't invoked. Her swimming animation is a doggy-paddle, and doesn't change much between idle and moving, though it was while swimming forward I first noticed her magical circumference-confused ankles. It's also worth mentioning that while swimming, Chell's jaw is in the right location! Hooray for swimming!
There are two distinct attack animations for hyenas, neither of which I was able to succesfully screencap, though you can see the direction via the remnants of Dash here. First, they lunge forward to bite, and second they jump... well I guess "lunge" works here too, but it's a much more vertical action, with their front two paws temporarily leaving the ground. I did not notice any additional animations for Tendon Rip.
Speaking of Tendon Rip, this is the ability they provide as their special. It's a 30% bleed damage increase for 15 seconds, with a 10 second cooldown. As BM with longevity, they can apply it to two targets with 100% uptime, though it does not appear that they do so without prompting. The three major classes that most rely on bleed damage for their DPS bring the Mangle debuff on their own (feral druids, arms warriors, subtlety rogues), though there are some classes (marksmen, fury warriors, prot warriors, am I missing one? Oh well :P) that do not, so if you don't have one of those three Mangle-classes—or yours has a nasty habit of standing in Optional Fire™—and you have other buffs/debuffs covered, a hyena would be a good choice in a dungeon or raid. There are two other pets that offer the bleed debuff—boars and rhinos—though these are both Tenacity pets so if you're really absolutely dead-set on eking out every single half-point of damage you can, hyenas are Ferocity and thus the "best choice."
I went Marksman for a brief period of time while testing Chell, to kite Myzerian around in circles so I could get my three free blue-quality gems from the quest he drops upon death. Chell got herself killed quite quickly, even without growl on (I think!), and I can't decide if this is because I'm bad at MM and wasn't pumping the deeps, if I actually forgot to turn Growl off, or because she relished watching me run around in circles for a good ten minutes in a spec I'm unfamiliar with, without her extra dps and without the time to rez her. (Pic partially unrelated; Chell's death here was the result of me not dismissing her to go sneak around and sabotage powder kegs, so the mobs all saw her and would body aggro. I did discover Myzerian a) can't be feigned off and b) can be frozen, which made me giggle uncontrollably.)
Overall, Chell and I didn't get along very well. Her colouring didn't impress me, nor begin to make up for the model flaws I couldn't get around. She was prone to dying, her special ability did nothing for me as BM hunter and nothing for her, and I found that even against single targets (she has no AoE threat ability), when she and I were both the same level I would occasionally pull aggro (to be fair to her, this might be because I'm now 84 and thus doing closer to "average 85 damage" compared to 82 and 83 where I was usually only 20% of my pet's threat on a mob, regardless of pet level equity or what-have-you). I thought she might enjoy romping about the fields of the Twilight Highlands, since it's so pretty there.
... I think I was wrong, because not two minutes after I released her back into the wilds, Darémyth and I got dogpiled (TEEHEE) by a bunch of Highland Worgs that came out of nowhere. Amongst the high-pitched squeakings of my shale spider and the growls of the pack, surely there was a snickering off in the distance D:
Name: Basanti
Level: 85
Exotics: Yes
Restrictions: None
Rares I Have: Skoll, Arcturis, King Krush, Sunblade Dragonhawk, Grimtotem Spirit Guide, Ghostcrawler
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And im from germany, so maybe my english is a but rusty, but i'll give my best.
Maybe he should stay a bit behind or something that the hunter dont stand in his wings. 
I was waiting for someone to do it. I got really bored and started watching Spongebob on Netflix. >_<
