This study examines the use of Beatrice Alemagna’s picture book ‘What is a Child?’ as a tool for understanding and implementing nurturing care principles in perinatal healthcare settings. Through mixed-methods analysis of forum discussions among 42 perinatal professionals, including psychologists, midwives, physicians, nurses, pharmacists and early childhood educators, we explored how engagement with the book’s metaphorical and visual elements facilitated professional reflection and development. Qualitative analysis revealed four primary themes: the power of metaphors in conveying complex caregiving concepts, the importance of collective care and community support, understanding the temporality of care and fostering transformative dialogue. Quantitative analysis showed significant differences in thematic engagement across professional groups, with medical professionals emphasising physical health (20.8%) and nutrition (32.1%), while psychologists focused more on early learning opportunities (28.3%) and responsive caregiving (21.0%). However, the picture book’s narrative framework encouraged professionals to transcend their domain-specific perspectives, fostering a more holistic appreciation of nurturing care principles. These findings suggest that carefully selected picture books can serve as sophisticated tools for professional development in perinatal care, particularly in translating abstract theoretical concepts into actionable insights while honouring different professional perspectives and expertise.