An apex predator, doting mother, and winning survivalist — bears are known for it all. Eight species of this animal exist ...

Mating season lasts from May through July. As in all bear species, fertilized embryos delay implantation in the female’s uterus. If a sow isn’t vigorous enough to sustain a pregnancy, ...

Mamma bears press pause on their early pregnancies ... an IVF procedure could provide a larger time window to assess embryo ...