The first thing I'd do with that list is get 2 more Sylvan Library in there. It's the stone-cold nuts, seriously. It will get that singelton Teeg more often, and just fuel you to finish fast when you need to. It's probably the best card in Zoo, and definately gets my vote for best card in the deck.
Steppe Lynx isn't worth playing 3 of...play the set, or none. I actually favor it over Loam Lion/Kird Ape because it can turn late game fetchlands (found with Sylvan Library) into 4/5 attacker enablers.
I think you'd actually be better trimming some of your hard removal out for Chain Lightning. Six spot removals (Path, Dismember, Swords) that DOESN'T double as burn seems bad. I've always stuck to the 4 Path's maindeck, play 1-2 Swords in the sideboard. If you want to split the Swords/Paths maindeck, that's fine...but put the 2x Dismember into your sideboard.
Your shockland could be Treetop Village...which is good against Terminus.
Magma Jet is horrible...Sylvan Library is so much better at feeding you card quality (especially with the 10 fetches.) That should be Chain Lightning/additional copies of Helx/additional copies of Rancor.
I also advocate
Vexing Devil in zoo. It lets you play a sligh approach more effectively and doesn't suck in the late game. Early game it isn't ideal, but truthfully, getting 4 damage for :r: is good efficiency.
Good luck!