In the Dewey decimal system where would you find books about animals?

Books on poetry are found in the 800s in the "1"s -- with the tens number representing the language in which the poetry is written. For example, 811 is American poetry, 821 is British poetry, 831 is German, 841 is French, 851 Italian, 861 Spanish, 871 Latin, 881 Greek and the rest of the languages are lumped into the 890s (the Dewey Decimal system was invented in Europe and is extremely Eurocentric in its categorizations).