Nice idea about luring them with tactically placing meat. Sounds easier than done though. At least for me =)
After a while, I noticed a bug that makes it even harder: When I click to drop down a meat, it will always count down 2 pieces for every click (Web version, Firefox, MacOSX).
What about making the scent radius a different color for each dino? Or meat type? Would make it a bit easier to figure out the relevant circle when several dinosaurs are near each other.
Other than that, I had quite some fun with your game. And my wife finds the hungry creatures cute too!
Congratulations on your submission.