I'm currently trying out a list similar to
Felipe de Castro's .
It's not traditional Zoo (and he didn't really call it zoo), but it has the same principles.
I'm running the following:
//Creatures - 16
4 Kird Ape
4 Wild Nacatl
4 Mogg Fanatic
4 Tarmogoyf
//Spells - 31
4 Lightning Bolt
4 Lightning Helix
3 Chain Lightning
4 Manamorphose
3 Land Grant
4 Path to Exile
4 Lotus Petal
3 Bequeathal
2 Reckless Abandon
//Land - 13
2 Windswept Heath
2 Wooded Foothills
2 Savannah
2 Taiga
2 Plateau
1 Mountain
1 Forest
1 Plains
The deck tries to address zoo's biggest disadvantage - card advantage. Without black or blue the choices are limited (yes, I know the inherent problems with creature enchantments).
Early game, this deck runs very smoothly, but if it gets held up, it can have some issues. Pre-board it has issues going against control - post board it can be a pretty even match up (red/green have plenty of ways to deal with CBT/Chalice/Trinisphere). It rolls over weenies and usually goblins, too. Post-board against them it's pretty much a cake walk. All but 1 of your creatures are pyroclasm, so it definately goes in the board.
One thing I would like to try and replace is mogg fanatic. He is really weak for this deck (other than the synergy with bequeathal). I'd like to find a replacement for him. I've thought about mongoose.With fetchlands, petals, land grants, manamorphose, and other burn your gy fills up fairly quickly; however, it doesn't seem to be quick enough. Mongoose would, however, shine in a control match up if you manage to sneak him in first turn. Rogue Elephant, too, became an option, but with 13 lands the loss of one really hurts. Thought about Quirion Dryad, but once again, it is a little too slow. Any suggestions would be helpful.
Most importantly, the deck is really fun to play.