The intensification of livestock production systems is a prerequisite to meet the growing demand for animal products. Genetic selection, assisted reproductive technologies and optimized reproduction ...

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

If you’ve ever had a spiny leaf insect as a pet, or you’re considering getting one, hopefully someone has warned you about this: if you put one in your enclosure, you might come back some time later ...

Not all species need sperm to fertilize an egg for sexual reproduction. Some species need sperm in order to induce completion of egg nucleus development, but then never use the sperm’s DNA. I describe ...

Here’s what you’ll learn when reading this story: Chondrichthyan fishes—a group that includes rays, skates, chimaeras, and sharks—are thought to have energy intensive reproduction cycles due in no ...

In a recent and historic breakthrough, scientists managed to reproduce rats without the need for male sperm, an important milestone that opens the question about the future of genetics and the ...

Why was Supersaurus so big? This impressive, 100-foot-plus sauropod was one of the largest creatures to ever walk the Earth – far larger than any terrestrial animal alive today. What could account for ...

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