Hi there, it's not open. I moved it around a bit so think it was a bit peeved with me, also I think it has/ had a slight case of mbd. The guy who I sold to hadn't really given it regular supplements of calcium, just multivitamins so I think the pic is a mixture of the two. Hopefully wont get any worse as I have it on repashy calcium plus now and it eats just fine- just a shame it's happened at all :-(