Animal reproduction encompasses the full sequence from gamete formation through fertilisation, embryonic development and parturition. In farm and companion species alike, natural breeding is ...

A new study published in Science and led by Monash University biologists reveals that the energy cost of reproduction is far greater than previously believed. The research, led by Dr. Samuel C Ginther ...

A study has found that the reason why the evolution of the first animals to appear on Earth was delayed for over 10 million ...

How do animals decide when to fight and when to walk, fly, slither, or swim away? Most research on animal conflict has focused on the short-term costs of single interactions, but a pair of behavioral ...

New research from the University of Newcastle has revealed that PFAS levels matching those found in the Williamtown contamination zone could significantly alter male reproductive health in ...

Fossils from some of the oldest-known animals on Earth, dating from 574 million years ago (Ediacaran period), suggest that cloning, not competition, dominated the Ediacaran seas, slowing evolution ...

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

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Animals have personalities too—and some animal couples raise their ...

Earth’s earliest animals may have held evolution back because they reproduced asexually, creating low-competition communities ...

Ryan Schnell and Amanda Minton, both Purdue University animal sciences alumni, are applying genetics in turkey and swine ...