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.

globalquiz.org

Daniel Wehner wikipedia → Keratin

animalsbiologyhedgehogsmammalsnature

Mammals quiz Biology quiz Nature quiz

You will play as

Answers by country

Greece

71%

12%

10%

Australia

69%

17%

Malaysia

68%

12%

Republic of Ireland

10%

65%

17%

the United Kingdom

62%

14%

334

Switzerland

60%

11%

21%

Germany

59%

23%

11%

626

India

57%

22%

12%

717

the United States

57%

17%

18%

713

Kazakhstan

53%

28%

112

Austria

52%

24%

15%

121

Uzbekistan

52%

26%

14%

Poland

51%

25%

17%

17299

Belarus

10%

51%

23%

15%

100

Pakistan

50%

23%

19%

Ukraine

49%

32%

11%

571

Russia

48%

33%

444

Nigeria

47%

31%

17%

Canada

14%

45%

16%

24%

the Philippines

40%

26%

23%

What is the inventive hunting technique of humpback whales?

Which mammals have the best sense of smell?

Which domestic animal has the largest number of breeds?

Which human disease are armadillos a reservoir for?