Nice idea. One suggestion would be let the little speech bubbles follow the dino's when you drag them. After I dragged a couple, I forgot which dino's belonged to which speech bubbles. Good work for a first submission though!
The speech bubble system was actually supposed to look like that, and the bubbles were meant to appear only when the cursor hovered over a dinosaur. But with my current skill level and the limited development time, I couldn’t manage to implement it without everything becoming completely buggy lol.