Scientists in Canada have documented a rare case of female polar bear adopting a new cub, highlighting the complex relationships among the apex Arctic predators. According to Polar Bears International, a non-profit conservation group, researchers tracking a female polar bear known as X33991 noticed she had gained a second cub who likely needed help. The researchers first placed a GPS collar on the female polar bear in the spring, and when she was spotted with two cubs of roughly the same age last month, they realized they were witnessing an exceedingly rare case of adoption.

Evan Richardson, a research scientist with Environment and Climate Change Canada, stated that female polar bears are "really good moms" and are "primed for looking after and caring for their offspring." Richardson explained that the females' instinct to care for the lost cub is likely driven by their maternal instincts, which are essential for the survival of their own cubs. "It's a really curious behavior and a testament to the strength and resilience of these incredible animals," Richardson said.

The adoption of the new cub by the female polar bear is a rare occurrence, as female polar bears typically only care for their own cubs. However, in cases where a cub is orphaned or separated from its mother, other females may take on the role of caregiver. Richardson noted that this behavior is not unique to polar bears, as other species of bears have also been known to adopt orphaned cubs.

The researchers who tracked the female polar bear, X33991, have been studying the behavior of polar bears in the Arctic for several years. Their research has provided valuable insights into the complex social dynamics of polar bears, including their mating habits, habitat use, and feeding patterns. The adoption of the new cub by X33991 is a significant finding, as it highlights the importance of female polar bears in the survival of their species.

The researchers plan to continue monitoring X33991 and her cubs to learn more about their behavior and habitat use. The data collected from this study will contribute to a better understanding of the impacts of climate change on polar bear populations and inform conservation efforts to protect these incredible animals.