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Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. It’s been a wormy, sexual head-scratcher for years. The Japanese ...

Scientists have recorded same-sex behavior across many animal groups, including mammals, birds, and reptiles. Still, the meaning of that behavior depends on the species and the context. Behavior that ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Male Indo-Pacific bottlenose dolphins form particularly tight ...

It is spring in the northern hemisphere and birds initiate the remarkable architectural feat of building a home for the young. How is this accomplished? Hormones and Getting in the Mood Much of the ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

Juvenile social play predicts adult reproductive success in male bottlenose dolphins, a new study has found. Juvenile social play predicts adult reproductive success in male bottlenose dolphins, a new ...

It can be hard to know if someone is really into you. Sometimes, you get hints — a certain look or smile, a nervous blush or flirtation. Giraffes get none of that. They have no set breeding season.

Scientific theory predicts that having more offspring leads to a shorter life span, including in humans. However, despite some hundred years of research, there is no unequivocal evidence for this link ...