I tried this in-game, the model looks great, but it has a few flaws concerning animation:
-The beak keeps clipping during talk animations in unit portrait.
-The walking animation doesn't correspond with the model at all. I'm assuming you use the orc raider, but the dinosaur looks heavy and it looks out of place to see it jump like a bunny.
-The model size is too small, it should be 20-30% larger to fit in line with Thunder Lizards in the game. This might not sound important, but it affects how big buffs look on the unit models in-game.
I think because of this i probably won't use the model and i could see people using this model if they desparetely need dinosaur models. In it's current state it's just not up to par with normal WC3 models.
The screenshot shows a side by side comparison with a level 6 thunder lizard with the same scaling.