Home›Mammals›Lifespan›18.000000Browse By18.000000FactsLifespanSourcesComments (0)Reader Challenges (0)FactsComparisonReproductive ModeWell-attestedViviparous (Live-Bearing) 1Lifespan1.000000Lifespan1 entry10.000000Lifespan3 entries10.200000Lifespan1 entry10.500000Lifespan1 entry10.700000Lifespan1 entry11.000000Lifespan1 entry11.100000Lifespan1 entry11.700000Lifespan1 entry110.000000Lifespan1 entry114.000000Lifespan1 entry12.000000Lifespan1 entry12.100000Lifespan1 entry12.250000Lifespan1 entry12.500000Lifespan1 entry12.600000Lifespan1 entry13.000000Lifespan4 entries13.800000Lifespan1 entry13.900000Lifespan2 entries14.000000Lifespan3 entries14.200000Lifespan1 entry14.300000Lifespan1 entry14.800000Lifespan2 entries15.000000Lifespan1 entry15.100000Lifespan1 entry15.600000Lifespan1 entry15.900000Lifespan2 entries16.000000Lifespan2 entries16.100000Lifespan1 entry16.300000Lifespan2 entries16.600000Lifespan1 entry16.800000Lifespan1 entry17.000000Lifespan5 entries17.200000Lifespan2 entries17.300000Lifespan2 entries17.400000Lifespan2 entries17.600000Lifespan1 entry17.800000Lifespan1 entry17.900000Lifespan1 entry18.000000Lifespan2 entries18.200000Lifespan3 entries18.400000Lifespan1 entry18.600000Lifespan3 entries19.000000Lifespan8 entries19.100000Lifespan1 entry19.500000Lifespan1 entry19.800000Lifespan2 entries2.500000Lifespan2 entries20.000000Lifespan9 entries20.300000Lifespan1 entry20.400000Lifespan1 entryShowing 1 to 50 of 179, page 1 of 4.1234Next →Sources1. Wikipedia: Mammaltier 2WikipediaMammal, lead sectionQuote, Mammal, lead sectionAll 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.