Question

Although Grace cannot hear the sound of her dog whistle, it effectively calls her Catahoula Hound, Fluffy. Fluffy can hear _____ stimuli, defined as frequencies _____ Hz.

A)Ultrasonic; above 20,000
B)Infrasonic; below 20
C)Auditory; between 20 and 20,000
D)Olfactory; above 100,000

Answer 1

Catahoula Hounds like Fluffy can hear ultrasonic stimuli, which are frequencies above 20,000 Hz, explaining why Fluffy can hear a dog whistle that Grace cannot.

Step-by-step explanation:

Fluffy, the Catahoula Hound, can hear ultrasonic stimuli; these are defined as frequencies above 20,000 Hz. Therefore, the correct answer to the question is A) Ultrasonic; above 20,000. The perception of sound frequency is referred to as pitch. While humans can hear in the range of 20 to 20,000 Hz, dogs like Fluffy can perceive higher frequencies, often up to 30,000 Hz or more. This is why a dog whistle, which emits sound above the human hearing range but within the dog's hearing range, is effective.