My favorite animal tarot deck is the Fantastical Menagerie by MRP. The images are from Grandvelli's Metamorphosis, and basically they attribute animal characteristics to humans. I have found it outstanding in readings because along with the "human" aspects you can also tap into the animal instincts. My readings with this deck are direct, consice, and objective. It also has a wonderful sense of humor full of satire.
Tarot For Cats, which is a majors only deck, is one of my favorites. Just to give you an idea, the Tower card is cat when approached by a vacuum cleaner ~chuckles~. This deck is funny, but really does convey the archetype of the majors very well.
I own the BBC in all its incarnation (1st edition, 2nd edition, and gold) so I guess we can surely assume I think highly of it *LOL*. If you are familiar with cat attitudes, ascribe them to the cards and you will get all sorts of interesting information in addition to traditional meanings. Excellently executed deck. Very RWS based. If you can ever gets your hand on the companion book do so, it has cat meanings (which literally do apply excellently to the tarot structure) as well as traditional (by that I mean non-cat specific) meanings.
I also have the Tarot of the Magical Forest, which I call my "Hammy" deck (named after Hammy from the movie and cartoon series Over the Hedge). The deck is totally RWS based and usable, my problem is that I cannot stop giggling when I pick it up. It does read well though once I stop laughing and get the tears wipped off my face.
Once upon a time I owned the Crow's Magic, but I was never able to "get it." Granted that was before it came with a book (though I am not sure that would help). I have no interest in revisiting that deck though.
If you like animal decks you should check into some animal oracles, there are quite a few very wonderful animal oracles. I tend to leave the animals mainly for oracles rather than tarot (unless it is cats because I collect cat decks).
I hope you enjoy your decks, like I said they are two of my favorites. If you don't like them, I do not think you will have much trouble trading the BBC at least. But hopefully you will not want to trade them.