Does the mass of a mammal affect the time of its gestation period?

Yes, the mass of a mammal generally affects the length of its gestation period. Larger mammals tend to have longer gestation periods, as they require more time for the developing fetus to reach a viable size and maturity. For example, an elephant has a gestation period of about 22 months, while smaller mammals like mice have gestation periods of only a few weeks. However, other factors such as species-specific reproductive strategies and environmental conditions can also influence gestation length.