Cats and dogs can hear ultrasound.
350
You can alleviate a tickly throat by scratching your ear.
9
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Pain occurs when sounds are above 130 db.
124
Pirates believed that piercing the ears with such precious metals as silver and gold improved one's eyesight.
131
Your ears secrete more earwax when you are afraid than when you aren't.
229
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Flies are deaf.
379