All mammalian infants suckle. This process requires the coordination of over 25 paired muscles to coordinate the movements of oropharyngeal structures, including the hyoid. The hyoid is suspended in a muscular and ligamentous sling, and its movements play a role in ensuring a safe swallow. Although we understand the general activation patterns of these muscles during infant feeding, our expectations of how they function to direct movements of the hyoid are primarily based on anatomical inferences. Here, we used biplanary videofluorscopy of infant pig feeding to track movements of the hyoid bone synchronized with contractile patterns and EMG activity of geniohyoid, stylohyoid, thyrohyoid and omohyoid, four muscles attached to the hyoid that are active during swallowing. We also animated diceCT-scanned muscles together with hyoid movements to estimate how muscle orientations relative to the hyoid changed during a swallow. Muscle contractile patterns were highly correlated with hyoid movements, and different muscles exhibited different contractile patterns. For example, stylohyoid was concentric during hyoid elevation, whereas at the same time, omohyoid exhibited eccentric activity. We also found that the line of action of the muscles changed following hyoid elevation, with dorsoventral angles being oriented more ventrally at peak hyoid elevation. Our results demonstrate that muscle contractile patterns are varied, and that the line of action of a muscle changes throughout a swallow. Finally, with just four muscles, we have illustrated the complexity of achieving hyoid movement during swallowing, justifying the need for further in vivo research.