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Mammals, like most vertebrate creatures evolved in a similar way, depending on their environment. They all come from the same root creatures and became highly specialised in their own niches. A classic example of this is the penadactyle limb. The bone arrangement of this five digited limb is pretty much the same for most creatures from whale, man, elephant, horse, bat, bird etc, but each has been adapted to suit a purpose best from flying, swimming or in the case of humans opening a bottle of fine Spanish Rioja.

Upon My Own Studies I Have Found That All Aquatic mammals Have A Back Fin That Moves Up and Down Instead of Like A Fish Which Is Side To Side...

Most mammals give birth live, with the exception of the platypus.

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15y ago

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