Read "Lonesome Dove, Volume 2: Comanche Moon" by Larry McMurtry online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
"WHOA, NOW. STOP, BOYS! " Augustus said.
Far down the river, in the shallows, he saw something he didn't like; something blue. The creature was a good distance away, but it was rolling in the shallow water; Gus judged it to be an aquatic beast of some sort. Few land animals worried him, but he had long been afflicted with an unreasoning fear of aquatic beasts-and now one had appeared in the muddy Rio Grande, where, up to then, they had seen nothing more threatening than the occasional snapping turtle.