Are you spieaking about the jaw bone or just the skin covering the jaw?
Can you tell me about the set up?
UVB light? How old ? Tube or coil?
What type of UVB light are you using? A tube or Coil? Strength?
Do you use any supplements?
Do you have a basking light?
Let just double check you have a tube type UVB. Do you know what strength it is and what brand? The 75 watt is a basking bulb. Sorry, but I need to be sure all the lighting is correct as it can have bearing on what is happening. Joan
The turtles need two different lights. One is a UVb tube that extends the length of the tank. It should be a Reptisun 10.0. This supplies artificial sunlight which metabolizes calcium that should be given dail. Most turtle keepers use a cuttle bone for the calcium. Without the UVB the bones get soft or deteriorate, which may be what has happened to your turtle. The bottom jawbone will grow back with proper nutrition and lighting, but for now it may have problems eating. You should also have a separate light bulb in a dome that supplies UVA which is a heat source for the turtle for basking. UVB lighting does not supply heat. At this point it would be wise fot the turtle to see a Herp vet and see if they can do some bonding on the bottom jaw to be sure he can eat. I would be happy to locate a Herp vet for you with a city and state. Joan
This care sheet should help: http://www.austinsturtlepage.com/Care/caresheet-western_painted.htm
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