Rev. and updated [ed.]. - Richmond Hill, Ont. : Firefly Books, 2012.
192 p. : col. ill., col. maps ; 26 cm.
"Extraordinary tales of the natural world's cleverest creatures"--Cover.
Brings together the cumulative research on the comparative intelligence levels of nonhuman "smart" species. Sally Boysen reveals how these intelligent animals communicate, learn behavior, show feelings and emotions and, for some species, how they use tools, count and sometimes pick up a foreign language.