The Black Bear Mother & Her Cubs. Cubs are born in January after a gestation period of approximately 7 months. Although mating occurs in June, fetal development takes place mainly in the last 2 months of pregnancy after the fertilized egg implants in the uterus in November (delayed implantation). More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.