It's early dawn in a swamp. A large snake has spent the night hunting for fish and frogs in the ponds and streams. The snake is a cottonmouth--the only venomous water snake in the United States It swims to the shore and slithers onto the land. When daylight breaks, the snake basks on a log, soaking up the sun's warmth to heat its body. Filled with information perfectly suited to the abilities and interests of its primary-grade audience, this colorful,...