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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Contraception May Extend The Life of Some Mammal Groups by 10% A surprising new study has found that blocking reproduction in some ...

Mammal evolution has been flipped on its head, according to new research that suggests marsupials are the more evolved mammals. By estimating how the common ancestor of mammals reproduced and ...

A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan increases by about 10 percent, though the reasons differ for males and ...

v. 1. Germ cells and fertilization.--v. 2. Embryonic and fetal development.--v. 3. Hormones in reproduction.--v. 4. Reproductive patterns.--v. 5. Artificial control ...

Why do lifespans vary across different species? A female elephant can live up to 80 years, but usually only has a few calves during her lifetime. A mouse, on the other hand, lives for a few years at ...

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 ...

A surprising new study has found that blocking reproduction in some mammals may increase their life expectancy by an average of 10 percent. The research is primarily based on captive creatures kept in ...

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