Located in the cervical region near the carotid arteries, it may have parathyroid glands attached and is often found adjacent to the ultimobranchial bodies. In snakes and lizards the thymus is lobulated. | Located in the cervical region near the carotid arteries, it may have parathyroid glands attached and is often found adjacent to the ultimobranchial bodies. In snakes and lizards the thymus is lobulated. |