How many calves do they have at a time? In a lifetime?

Although there have been reports of dolphins giving birth to twins, they most often give birth to one calf at a time.  When two dolphins are born together, one usually doesn't survive.  They can stay with mom until she gets pregnant again, between 3-5 years.  Gestation period is11-13 months.

A mom and newborn calf

 {flv}MomCalfTA{/flv}