xplores the various methods of animal reproduction, highlighting the dependency of young animals on their parents, particularly in mammals, birds, and amphibians. It explains both asexual reproduction ...

All-female animal groups including the Amazon molly fish, Komodo dragon and hammerhead shark.

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 ...

I asked my friend Michela Ciccarelli why so many babies arrive then. She’s a veterinarian at Washington State University. She ...

GREENVILLE, S.C. — For weeks, zookeepers suspected that Autumn, the 8-year-old Masai giraffe, was pregnant again. The world had watched in awe on live video as Kiko, Autumn's first calf, dropped from ...

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 ...

For some animals, reproduction comes at the ultimate cost—their own lives. While this may seem extreme, it's a natural strategy to maximize reproductive success. These species invest everything into ...

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 ...

Researchers in Canada discovered 567-million-year-old Ediacaran fossils that may contain the earliest evidence of sexual ...