mammals , mammals , marsupials , , monotremes, Platypus and echidnas are ____. They are warm-blooded like mammals, but they lay eggs., reptiles , cold-blooded, air-breathing vertebrate animal typically characterized by dry, scaly skin and the laying of eggincluding tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms, insects , They have six legs and generally with wings., arachnids, a class of arthropods including the spiders, scorpions, mites, and ticks and having a segmented body divided into two regions of which the front part bears four pairs of legs but no antennae. arachnid adjective., fish , , amphibians, They breathe air, but they n ed water to survive..

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