MammalCharacteristicsBiologyTwo27-1DLion/NlgMammalslumanDeerogHorseWhatisamammal?BelongtotheclassMammaliaEndothermicvertebratewithhairFemaleshavemammaryglands,secretemilktofeedyoungThereareapproximately4500speciesofmammalsSizeofmammals°MammalsvaryinsizeSmallest--pygmyshrew-musteatconstantlyLargest-bluewhale--,sweatglandsandatvariesdependingonwheretheyliveMovementSlowest-twotoessloth-activeonlyfourhoursadayFastest-cheetah400mper15sec,humans150mper15secHowdotheyrun?onglegsFlexiblehipandshoulderjointsMovementOtherformsofmovementseeninmammalsClimbing--monkeysusethetailaswellSwimming--paddles/flippersFlying--batsResponseMammalshavethemostdevelopedbrainintheanimalkingdomTherearethreepartstothebrainCerebrum-largestpart-thinkingandlearninggoesonhereCerebellum--controlsmovementsMedulla--ipitallobeonsCerebellumMedullaSpinalcordBrainstem
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