Animal behaviour: Female mammals that suckle another’s young have more offspring

By Christa Lesté-Lasserre Suckling piglets suckling a sow Shutterstock / Thuwanan Krueabudda Mammals that share their milk produce more offspring over the course of the year – and the benefits are even greater than those seen when nursing mothers are supported in other ways, such as being provided abundant food or parenting help. The findings suggest … Read more