Females are not smaller than males in most mammal species

Male mammals have lengthy been mentioned to be bigger than females – a phenomenon often called sexual dimorphism – however it seems that is probably not the norm. An evaluation of the physique mass of over 400 mammal species revealed that solely about 44 per cent had bigger males.

“There has been huge taxonomic bias,” in what forms of mammals have been examined for physique dimension dimorphism, says Kaia Tombak at Hunter College in New York. There has been …