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

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 ...

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 ...

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

Katherine Gallagher is a writer and sustainability expert. She holds a B.A. in English Literature from Chapman University and a Sustainable Tourism certificate from the GSTC. Parthenogenesis, a form ...

These unusual facts about animal sexuality expose the oddities associated with animal reproduction and sexual habits in nature. Whether it’s an eccentric animal reproductive method or a strange ...

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

Scientists suggest Earth's earliest animals reproduced asexually, slowing evolution and delaying the biodiversity boom that ...

Animals possess circadian clocks, or 24 h oscillators, to regulate daily behavior. These typically take their cues from the periodic change of sunlight and darkness. However, many animals are also ...

For a small number of animals, reproduction marks a biological endpoint rather than a stage in an ongoing life cycle. Death follows mating with such consistency that it can be predicted within a ...

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 ...