[Bernd Bussler]

Hi Patrick
Do not worry, I know this and have this more often. This is a symptom of old age, this is called backbone deformirung. As in humans at the age is not so bad, the animal is still alive, but does not produce more children and can not eat as good as the others and is always too short, at some point the animal is then dying of weakness. Everything ko and normal, not a disease or other bad.
Greeting Bernd 🙂