The Rio dos Bois is a river in the state of Goiás, central Brazil. It is a tributary of the Paranaíba River, flowing into the São Simão reservoir. This creates a waterway where the river's course eventually feeds into a major reservoir system. The paddling experience on the Rio dos Bois includes sections with class I and class II rapids, indicating a beginner to intermediate level of whitewater. Some parts of the river feature noticeable narrowing between rapids, which can concentrate the flow and require attentive navigation. For trip planning, online resources like PaddleWays provide tools to view access points, water conditions, and the boundaries between private and public land along the river, which is crucial for determining legal put-in and take-out locations. A specific kayak descent was recorded in October 2019, suggesting this period can be suitable for paddling. The river's character is defined by its role as a flowing tributary within the broader Paraná River basin, offering a mix of moving water and calmer sections influenced by the reservoir system downstream.