Hmm 5in and 9 months old,,,ok this is from my own experience from having these CB BABY endilicheris.
We have had 3-4 out of many that showed this same trait as you speak of,, after watching and watching I have come to the conclusion that some have nerv disorders and spasms to the point of actually bending so hard that they have broken there own necks and body in half.
I will post a vid when I get home tonight and I am sure we are talking about the same thing...her and I believe it is from way way way to much induced inbreeding
sent from work