Which animal class has the most species?
crustaceans
arachnids
insects
birds
About 60% of all known species are insects.
reach: rather globalanimalsnaturezoology
Answers by country
crustaceans
arachnids
insects
birds
answers

17

16

29

130

10

10

216

13585

244

13

31

467

50

28

14

32

16

21

10

12