She is probably just stretching her jaw and having a yawn. Their jaws are not attached like ours so need to sort the alignment out every now and then. Florence always yawns before a meal like a warm up exercise!
0.1.0 Royal Python - Florence 1.0.0 Boa Constrictor - Boris 1.1.0 Alaunts - Willow & Brochan
Haha, I suppose a yawn whilst been handled by a guest could be misunderstood quite easily. Giving it the check out my tusks flex. I love to see it. My corn yawns but he is polite he always turns away before going for it, Duke isn't fussy.