Animal breeding is an interest shared by farm owners and pet lovers, yet how to simply assess animals' reproductive functions remains a question. An Osaka Metropolitan University researcher provides a ...

Animal reproduction and breeding encompasses the full spectrum of natural, assisted and genetic processes that underpin the perpetuation, improvement and conservation of species across diverse taxa.

What purpose does the penis serve? Why is it that members of one species have no penis at all, while those of another have two? Why do they vary so much in shape and size? And where do vaginas, or the ...

Trilobites are perhaps the most successful group of animals ever to live. Named for their distinctive three-lobed body, these armored, pill-bug-like arthropods were some of the first hard-bodied ...

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 ...

The energy invested in animal reproduction is as much as 10 times greater than previously estimated when the metabolic load of bearing and caring for offspring is accounted for, according to a new ...

Surprising animal behaviors, from birds to amphibians, are revealing deep biological processes. Scientists are uncovering how viruses manipulate cells, how the immune system balances defense, and how ...