Audiogram of the domestic dog (Canis familiaris)
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Data from: Heffner, H.E. (1983) Hearing in large and small dogs: Absolute thresholds and size of the tympanic membrane. Behavioral Neuroscience, 97, 310-318.
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Absolute thresholds (in dB re 20 µN/m2) for four dogs (designated A through D
|
Ìý Frequency (in kHz) |
Individual Thresholds (in dB) |
Ìý Average |
|||
|
A |
B |
C |
D |
||
|
.050 |
— |
— |
— |
72 |
72 |
|
.062 |
70 |
59 |
50 |
68 |
62 |
|
.125 |
50 |
42 |
35 |
50 |
44 |
|
.250 |
39 |
25 |
21 |
26 |
28 |
|
.500 |
24 |
24 |
11 |
20 |
20 |
|
1 |
18 |
21 |
-3 |
22 |
14 |
|
2 |
5 |
12 |
0 |
18 |
9 |
|
4 |
3 |
7 |
-5 |
9 |
4 |
|
8 |
-2 |
0 |
-5 |
4 |
-1 |
|
16 |
3 |
15 |
0 |
4 |
6 |
|
32 |
10 |
30 |
16 |
17 |
18 |
|
40 |
— |
50 |
— |
32 |
41 |
|
45 |
55 |
71 |
60 |
57 |
61 |
|
50 |
>71 |
— |
65 |
68 |
70 |
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Lowest and highest frequencies audible at sound
pressure levels (SPL) ranging from 30 to 70 dB SPL
|
SPL (in dB) |
Lowest audible frequency (in kHz) |
Highest audible frequency (in kHz) |
|
70 |
.053 |
50 |
|
60 |
.067 |
44 |
|
50 |
.100 |
41 |
|
40 |
.160 |
37 |
|
30 |
.227 |
37 |
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Additional Parameters:
Body weight = 15 kg
Functional interaural distance= 435 µs
(Time required for sound to travel around the head from one auditory meatus to the other.)
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Comments: Threshold values taken from original data. A: Chihuahua, B: Dachshund, C: Poodle, D: St. Bernard