Introduces a boy who visits a farm and begins to notice similarities and differences between animals. Shows that animals can be grouped according to categories such as insects or fish and as to whether or not they have backbones.
1958
2019
1996
1994
2020
1977
2003
1981
1910
1969
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2001
2012
2013
2024
2021
1955
2011
2007
2005