How long is a black bears gestation period?

Good question. The fertilized egg matures to the blastocyst stage and goes dormant. Blastocyst will not implant in the uterus until late November. In early December, embryo development proceeds normally (delayed implantation: a process shared with badgers, mink, weasels, otters, and wolverines). Birth occurs in late January. Gestation is approximately 7 months. The delay in gestation is approximately 5 months and true gestation is approximately 8 weeks. A black bear usually has between 1 to 5 cubs.