Awww Tibbers why did you do that?
Seems odd that he would bite your skinkid while he was sleeping. i wonder if its jealousy or if your child might of accidentley did something that tibbers didnt like when he was awake? I hope it all works out........I would also say a trainer is needed, sorry i dont have any other advice except i wouldnt leave tibbs and skinkid alone till you get a grip on it. Good Luck!