Shape Matters: Lemurs Eat Much Bigger Rounded Than Cubic Foods

Lemurs ingested significantly larger tricylinders than cubes, challenging the assumption in all previous V_b research that cube V_b represents an ingestive maximum. This suggests a strong influence of shape on ingestion and that V_b of tricylinders, a more naturalistic shape, may better approximate ingestive constraints. Alternatively, our findings may suggest lemurs ingest foods based on their maximal linear dimensions-potentially related to limitations on their ability to manipulate large foods-rather than gape or oral volume constraints.