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%
82%
4%
8%
23
flagGreece
0%
73%
8%
17%
23
flagMalaysia
10%
68%
15%
5%
19
flagIndia
3%
65%
19%
11%
309
flagFrance
6%
65%
17%
10%
29
flagthe United Kingdom
4%
63%
15%
15%
366
flagGermany
2%
63%
15%
18%
188
flagAustralia
6%
63%
16%
10%
30
flagRepublic of Ireland
4%
62%
19%
12%
62
flagUkraine
4%
62%
18%
13%
43
flagCanada
8%
61%
11%
19%
36
flagItaly
0%
60%
30%
8%
23
flagPoland
4%
59%
21%
14%
15154
flagthe Netherlands
4%
59%
28%
7%
42
flagthe United States
4%
57%
18%
18%
534
flagSweden
0%
56%
21%
21%
23
flagPakistan
2%
55%
27%
12%
47
flagthe Philippines
8%
50%
21%
19%
46
flagUnknown
3%
49%
28%
18%
742
flagNorway
9%
36%
31%
22%
22

Gender

men53%
women54%
bones
3%
3%
keratin
53%
54%
chitin
25%
25%
cartilage
17%
16%

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Author: globalquiz.org
Illustration: Daniel Wehner
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