Dolphinsarenotfish,butwarm-bloodedanimals.Theyliveingro...
问题详情：Dolphinsarenotfish,butwarm-bloodedanimals.Theyliveingroups,andspeaktoeachotherintheirownlanguage.Inthistheyarelikeotheranimals,suchasbeesandbirds.Butdolphinsareverydifferentfromalmostalllandan...