Which of the following animals cannot stick out its tongue? Explained

Which of the following animals cannot stick out its tongue? Explained The ancient crocodile possesses a unique oral anatomy that keeps its tongue completely immobilized. Unlike mammals that can freely extend their tongues, this apex predator has a dense, fibrous sheet of tissue anchoring the entire length of the muscle flat against the floor of its lower jaw. This rigid, permanent attachment means the reptile can never project its tongue past its jawline, even when opening its mouth to its fullest extent. This anatomical restriction functions as an incredible piece of deep-water engineering. By keeping the tongue firmly anchored down, the crocodile can utilize a specialized fleshy flap at the very back of its mouth called the palatatal valve. When the reptile submerges or grabs struggling prey beneath the surface, this valve seals the throat completely airtight and watertight, allowing the animal to bite and drown its dinner without accidentally flooding its lungs.