Which group of mammals has the more 'primitive' reproductive strategy -- marsupials, with their short gestation periods, or humans and other placental mammals, which have long gestation periods? For ...

Add Yahoo as a preferred source to see more of our stories on Google. Mammals experience a 10% increase in lifespan when reproductive opportunities are suppressed. The study analyzed records from 120 ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment.View full profile Rachael has a degree in Zoology ...

A female northern elephant seal with her pup on the beach at Año Nuevo Reserve. (Photo by Dan Costa) Changing environmental conditions may threaten marine mammal populations by making it harder to ...

It’s hard to imagine life on Earth without mammals. They swim in the depths of the ocean, hop across deserts in Australia and travel to the moon. This diversity can be deceiving, at least when it ...

Changing environmental conditions may threaten marine mammal populations by making it harder to find prey, and a new study shows how small, gradual reductions in prey could have profound implications ...

Mammals experience a 10% increase in lifespan when reproductive opportunities are suppressed. The study analyzed records from 120 zoos to determine the hidden cost of reproduction. When mammals have ...