Home›Mammal Genera›Everyday Group›Cetacean Families (Whales, Dolphins, Porpoises)›All Cetacean Families (Whales, Dolphins, Porpoises)Browse ByAll Cetacean Families (Whales, Dolphins, Porpoises)FactsAll Cetacean Families (Whales, Dolphins, Porpoises)SourcesComments (0)Reader Challenges (0)FactsComparisonTaxonomic Rank OrderWell-attested6 1Reproductive ModeWell-attestedViviparous (Live-Bearing) 2All Cetacean Families (Whales, Dolphins, Porpoises)Filter Results7 entriesParent Taxon (Taxonomy Tree)AllCetacea (5)Taxonomic RankAllFamily (7)BrowseCompareSelect all 7BalaenopteridaeMammal FamiliesDelphinidaeMammal FamiliesHippopotamidaeMammal FamiliesIniidaeMammal FamiliesMonodontidaeMammal FamiliesPhocoenidaeMammal FamiliesPhyseteridaeMammal FamiliesSources1. Wikipedia: Taxonomic ranktier 2WikipediaTaxonomic rank, Fundamental ranks section, rank sequence sentence, group 517428Quote, Taxonomic rank, Fundamental ranks section, rank sequence sentence, group 517428kingdom, phylum or division, class, order, family, genus, and speciesView the Source2. Wikipedia: Mammaltier 2WikipediaMammal, lead section, group 517428Quote, Mammal, lead section, group 517428All modern mammals give birth to live young, except the five species of monotremes, which lay eggs.View the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.