Animals in the wild may not have an annual planner to keep track of the year, but they nonetheless manage to keep to a strict calendar—for example knowing just what time of the year to breed and when ...

Madagascar is home to a unique biodiversity with a large number of endemic species, among those many lemur species, including the mouse lemurs. This diversity is also found in their retroviruses.

The testes of male mouse lemurs swell 5-10 times larger during the breeding season. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by ...