Composition of collared peccary (Tuyussu tujucu) milk was described for samples obtained from a group of four captive females maintained on a high quality diet and four wild-caught females inhabiting semiarid rangelands in southern Texas.The gross composition of peccary and porcine milks are fairly similar, with some differences in mineral composition. Results suggest that bottle formulations developed for domestic swine piglets would provide adequate nutrition for hand-rearing nursling peccaries.