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.
2013
2012
1935
2003
2007
1990
2006
2001
2023
2022
2002
2008
2009
1984
2014
2020
2021
2010