Yes, they are sensitive to heat and cold. When exposed to a sudden change in temperature or when out of the water, they will instinctively seek a cooler environment. If this is not available, their natural instinct can cause them to exhibit behaviors that may be considered “itchy” such as biting at parts of your body that have been exposed to an excessive amount of skin moisture. Even if you cover these areas with bandages, the urge for coolness will still be present. In severe cases where this behavior becomes extreme enough for you to disturb their comfort level during recovery from anesthesia or surgery, it may require using ointments until the area has returned back to normal sensitivity again in order for this condition to resolve itself naturally without medication intervention.