Book excerpt: Genetics and physiology of the neonatal pig; Genetics and neonetal survival; Immunology and neonatal mortality; Thermoregulation and the environment; The gut and nutrition of the neonetal pig; Development of the neonetal gut and enzyme systems; Microbiology of the gut and the role of probiotics; Nutrition of the neonetal pig; Diseases, behaviour and husbandry of neonatal pigs; Principal neonatal diseases; The physical environment and mortality; Behavioural aspects of piglet survival and growth; Human care and the neonatal pig; The way ahead.