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
4%
86%
4%
4%
22
flagSpain
0%
80%
20%
0%
15
flagGreece
0%
72%
9%
18%
22
flagMalaysia
11%
66%
16%
5%
18
flagFrance
6%
65%
17%
10%
29
flagItaly
0%
65%
25%
10%
20
flagthe United Kingdom
4%
64%
16%
15%
345
flagIndia
3%
64%
19%
11%
262
flagAustralia
7%
64%
17%
7%
28
flagGermany
2%
63%
15%
18%
180
flagRepublic of Ireland
3%
60%
21%
14%
55
flagthe Netherlands
5%
60%
27%
7%
40
flagCanada
9%
60%
12%
18%
33
flagPoland
4%
59%
21%
14%
14382
flagthe United States
4%
56%
19%
18%
504
flagPakistan
2%
56%
26%
13%
46
flagUkraine
6%
54%
24%
15%
33
flagUnknown
3%
49%
28%
18%
721
flagthe Philippines
9%
48%
21%
19%
41
flagNorway
10%
35%
35%
20%
20

Gender

men52%
women54%
bones
4%
3%
keratin
52%
54%
chitin
25%
25%
cartilage
17%
16%

Language versions

Details

Author: globalquiz.org
Illustration: Daniel Wehner
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