Mary and Louis Leakey had three sons: Jonathan, born in 1940, Richard in 1944, and Philip in 1949. Their fourth child, a daughter, died as a baby. The three boys received much of their early childhood care at various anthropological sites and, whenever possible, the Leakeys excavated and explored as a family. The children accompanied them to various work sites, with dig becoming a family endeavour. The boys grew up with the same love of freedom that their parents had become accustomed to. Mary would not even allow guests to shoo away the pet hyraxes that helped themselves to food and drink at the dinner table. In her autobiography, she rarely mentioned her pregnancies or the difficulties she faced while raising children in Kenya. She smoked a lot, first cigarettes and then cigars, and usually dressed as though completing an excavation.