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While it has been widely proved that breastfeeding is the healthiestfeeding option for a baby and its mother, the mechanisms by which ababy removes milk from the breast are still not completely known. Partly this is due to the lack of tools to analyze images of the infant oral cavity during feeding automatically and quantitatively. In this paper we propose two methods for analyzing ultrasound videos toautomatically detect relevant events such sucking and swallowing ofmilk and to discriminate different types of tongue action during milk removal. The proposed algorithms provide, for the first time, quantitative indications of the type of activities carried out during breastfeeding by the baby, promising unprecedented advancements in thefield.