It makes evolutionary sense for long-lived animals to have complex social relationships—such as friends and enemies—researchers say. Some species and individuals focus their energy on reproduction ...

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 ...

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 ...

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 ...

The vast majority of animals need to breed to reproduce. But a small subset of animals can have offspring without mating. The process, called parthenogenesis, allows creatures from honey bees to ...