You’re like a fish living at the bottom of the ocean. But you live at the bottom of an ocean of air! Miles (kilometers) of water are piled up above the fish, and miles of air are piled up above you. …
The newborn meadow mouse weighs little more than a feather. Its eyes are closed and it has no fur. The baby river otter’s eyes are closed, too. But a thick fur coat covers its body. The fawn’s eyes…
Dogs, cats, horses, monkeys, and humans are some of the creatures called mammals uhls). They’re all warm-blooded and have some hair. This is one way to tell them from fish and reptiles, which are…
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