Update: Xixo took the deck to #1 Legend in EU, NA and Asia servers. I'm not sure if people have done it before with a Zoo deck but it is certainly very impressive!
Xixo's Warlock Zoo Deck-list from Hearthstone Top Decks
The most interesting inclusion is 2 Imp-losion. There is a Sea Giant for the "synergy" with Imp-losion too. I think Imp-losion is something to test in zoo as it might be a useful card to re-gain board control if you happen to lose it.
Edit: Imp-losion is pretty mana efficient as at a minimum, it is a 4 mana spell that will at least deal 2 damage and summon 2 Imps (unless you target a minion with divine shield!) and it combo-s well with the staple zoo minions like Knife Juggler, Dire Wolf Alpha and Defender of Argus. However, I don't think Zoo have much space at the 4-mana slot and you don't want to draw too many cards that cost 4-mana and above. Maybe as a 1-of?