What are hedgehog's spines made of?

bones
keratin
chitin
cartilage
Keratin is a fibrous protein, a key struc­tural com­po­nent of the hair, nails, horns, claws and hooves of mammals. Hedgehog spines are hollow hairs made stiff with keratin.

Answers distribution

bones
keratin
chitin
cartilage
answers
flagthe United Arab Emirates
6%
86%
0%
6%
15
flagSpain
0%
78%
21%
0%
14
flagSingapore
7%
76%
7%
7%
13
flagMalaysia
13%
73%
6%
6%
15
flagAustralia
12%
68%
12%
0%
16
flagGermany
2%
66%
12%
18%
137
flagIndia
4%
65%
19%
11%
173
flagCanada
10%
64%
10%
14%
28
flagItaly
0%
64%
21%
14%
14
flagthe United Kingdom
3%
63%
17%
15%
256
flagFrance
7%
61%
19%
11%
26
flagPoland
4%
58%
21%
15%
9722
flagRepublic of Ireland
2%
56%
28%
12%
39
flagthe United States
4%
55%
20%
18%
430
flagPakistan
3%
55%
29%
11%
27
flagthe Netherlands
4%
54%
33%
8%
24
flagUnknown
6%
50%
30%
14%
50
flagthe Philippines
6%
50%
26%
16%
30
flagNorway
7%
38%
38%
15%
13
flagCzech Republic
0%
30%
30%
20%
10

Gender

men54%
women55%
bones
4%
3%
keratin
55%
55%
chitin
23%
25%
cartilage
16%
15%

Details

Author: globalquiz.org
Illustration: Daniel Wehner
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