From Your Understanding of the Anatomy of the Ear, What

Multiple Choice

From your understanding of the anatomy of the ear, what is the most likely explanation for a dog's ability to hear higher frequencies (pitch) ?

A) more ear bones for greater amplification
B) larger outer ears
C) a thinner and therefore more sensitive tympanic membrane (eardrum)
D) a wider range to the tectorial membrane and hair cells
E) a more advanced brain section devoted to hearing