Points out that mammals, including the anteater and seal, have hair and nurse their young. Shows representative members of mammalian groups - carnivores, rodents, ungulates, marsupials and primates.
1971
1995
1986
2014
2012
1983
2020
2022
1976
2017
2018
1931
2015
2024
1989
2019
2002
2000