Chihuahua behavior

Question
My friend's chihuahua is 6 and is showing unusual behavior. She is staring at the floor, hanging her head and her ears and trying to lay on her owner's face at night. She is eating normally, drinking water, and has been to the vet for an opinion but nothing seems to be indicative of any one problem. I have read some on hypoglycemia and some of the symptoms might come close. Any suggestions? Thanks.

Answer
Kim..sounds like you may be right about the hypoglycemia..that is what it sounds like to me.your friend may want to try another vet as the first one doesnt seem to know. I do not think that the problem has anything to do with training so a vet is your best bet.