Three volunteers from a small dog rescue in Immingham, England, are trading familiar riverbanks for the Zambezi's crocodile-thick waters this September — a ten-day, 110-kilometer kayak expedition through six African countries, undertaken not for adventure's sake alone, but to keep eight thousand pounds of monthly care flowing to animals who cannot ask for help themselves. It is an old human story dressed in new urgency: ordinary people choosing extraordinary discomfort so that the vulnerable might simply live.