The way that Earth's first animals reproduced held back life's diversity for millions of years, until stress and competition ...

Add Yahoo as a preferred source to see more of our stories on Google. Mother and baby joey eastern grey kangaroo eating grass looking at the camera ...

A new article in Ecological and Evolutionary Physiology examines how the immune system and reproduction interact in female mammals, especially during pregnancy, from mating to birth. Lauren E.

Alternative reproductive tactics (ARTs) encompass the suite of discrete morphological, behavioural and physiological strategies that individuals within the same sex adopt to maximise reproductive ...

The porcine reproductive system relies on tightly regulated steroid hormone metabolism to coordinate gonadal development, gametogenesis and accessory gland function. Within the testis and ovaries, ...

The mating game in the animal kingdom is nothing less than fascinating and somewhat weird. Some species pierce, clone, chew, or even fake their way through the mating process. To make survival ...

Kangaroos are the iconic Australian animals that are famous for their ability to carry their young around in a pouch on their front. However, they actually have one of the most unusual reproductive ...