hi, i have a male bearded dragon named boris, and today i came home from the store to see some black spots on his lips. he is currently stressed out because he saw his reflection but i dont know if stress has to do with this. this has never happened before. he is seven months old, and lives in a 48 gallon tank. I dont know if this has to do anything with his lights and temperature, but during the day time his tank is 89 degrees Fahrenheit and in the night time its 72. if it has anything to do with his mouth just so you know i brush his teeth 2x a week and his teeth are healthy and clean. please help, i am so confused. attached is what he looks like at the moment and the stuff on his lips.