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
Republic of Ireland
17
Greece
16
Unknown
29
the United Kingdom
130
Egypt
10
Italy
10
Germany
209
Poland
13543
India
244
Switzerland
13
Austria
31
the United States
463
Australia
50
Canada
28
Malaysia
14
Pakistan
32
the Netherlands
16
the Philippines
21
France
10
Nigeria
12