I have stumbled another belief that is hotly debated amongst some beardie owners. I noticed Rex today got frustrated with his crickets avoiding his lunges. And he did his first head bob. Naturally I would assume he is male as head bob is more uncommon in females. But there is a camp that says behavior is a poor indicator of sex. Bear in mind rex is a baby, only 8 inches so no official gender. Would it be safe to say that if he does more head bobbing in the future he will most likely turn out male? Also one more question, can females turn their beard black?