I think you have two different health issues going on. The yawning usually means the tortoise has a respiratory infection. The bump is some sort of cyst or abscess.
The baby needs to be on antibiotics. It would help him if you could warm his water up to about 85F degrees to help him fight the infection.
Thanks yvonne, I was told by a local pet shop person that the cyst or the small bump also might appear if the turtle is lack of calcium ,so he suggested me a calcium powder and it works However,it still keep yawning,how to overcome this ?
cyst or the small bump also might appear if the turtle is lack of calcium ,
Hmmm, that is an interesting one...a new one by pet shop staff....I would be soooo very interested if you would please inquire with the pet shop clerk exactly where this nugget of opinion came from?