The dinosaur drinks ghost water.

The dinosaur interacts by drinking water but the thirst bar doesn't go up, and the dinosaur's head moves from side to side (I will send the following evidence later, when I have Wi-Fi)

The issue is that sometimes, when the dinosaur drinks water, it performs the drinking animation, but the thirst bar never goes up.

You will have to drink water to raise the thirst bar, and above all, you shouldn't move your head during the action.