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 ...

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

We take it for granted that humans find it more difficult to conceive as they grow older. But our recent study, which analysed data from 157 animal species, found that male reproductive ageing seems ...

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 ...