A seat support device for a riding animal or a pack animal, a saddle tree, and a saddle with such a saddle tree. The seat support device comprises a right multi-linked lug arrangement with a first link section and at least a second link section and a left multi-linked lug arrangement with a first link section and at least a second link section. A pivoting device with a pivot axis is each formed case between two adjacent link sections, so that two adjacent link sections are pivotable towards one other around a pivot axis substantially within a pivot plane which penetrates the pivot axis substantially perpendicular.