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
flagIsrael
0%
90%
0%
10%
10
flagMalaysia
7%
84%
7%
0%
13
flagthe United Arab Emirates
7%
84%
0%
7%
13
flagSpain
0%
83%
16%
0%
12
flagAustralia
12%
68%
12%
0%
16
flagGermany
1%
67%
12%
18%
113
flagthe United Kingdom
4%
66%
14%
15%
207
flagCanada
4%
66%
14%
14%
21
flagIndia
4%
63%
19%
12%
141
flagFrance
9%
63%
13%
13%
22
flagItaly
0%
63%
27%
9%
11
flagthe Netherlands
4%
59%
27%
9%
22
flagRepublic of Ireland
2%
58%
25%
13%
36
flagPoland
4%
57%
21%
15%
8345
flagthe United States
4%
53%
20%
18%
382
flagPakistan
4%
52%
32%
12%
25
flagthe Philippines
6%
51%
24%
17%
29
flagNorway
8%
41%
41%
8%
12

Gender

men55%
women55%
bones
4%
3%
keratin
55%
55%
chitin
23%
24%
cartilage
16%
15%

Details

Author: globalquiz.org
Illustration: Daniel Wehner
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