I used to get a miaow sound in my ear at night if my sugars were going low quickly, the cat was hypo-aware and would wake me and my wife up and she would look after me . Funny enough the cat was called Spike, God I miss that cat.
I get incredible tingling - more like a burning sensation in my hands and arms in the mornings sometimes, always a sign of low sugars and cured by glucose tablets. The worse the pain the lower the bm. Even dsn thought this was strange and had not heard of this symptom previously.