![Contribution of hybridization between polar bears and grizzly bears to polar bear extinction - Shafer - 2023 - Wildlife Letters - Wiley Online Library Contribution of hybridization between polar bears and grizzly bears to polar bear extinction - Shafer - 2023 - Wildlife Letters - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/dcbc6134-ac4c-4091-a1aa-b8364644661f/wll212024-fig-0002-m.jpg)
Contribution of hybridization between polar bears and grizzly bears to polar bear extinction - Shafer - 2023 - Wildlife Letters - Wiley Online Library
![Polar bear - brown bear hybrid / polar bear-grizzly bear hybrid also called grolar bear / pizzly bear / nanulak, rare ursid hybrid Stock Photo - Alamy Polar bear - brown bear hybrid / polar bear-grizzly bear hybrid also called grolar bear / pizzly bear / nanulak, rare ursid hybrid Stock Photo - Alamy](https://c8.alamy.com/comp/T90BE7/polar-bear-brown-bear-hybrid-polar-bear-grizzly-bear-hybrid-also-called-grolar-bear-pizzly-bear-nanulak-rare-ursid-hybrid-T90BE7.jpg)
Polar bear - brown bear hybrid / polar bear-grizzly bear hybrid also called grolar bear / pizzly bear / nanulak, rare ursid hybrid Stock Photo - Alamy
![Polar bear - brown bear hybrid / polar bear-grizzly bear hybrid also called grolar bear / pizzly bear / nanulak, rare ursid hybrid Stock Photo - Alamy Polar bear - brown bear hybrid / polar bear-grizzly bear hybrid also called grolar bear / pizzly bear / nanulak, rare ursid hybrid Stock Photo - Alamy](https://c8.alamy.com/comp/T90BJ1/polar-bear-brown-bear-hybrid-polar-bear-grizzly-bear-hybrid-also-called-grolar-bear-pizzly-bear-nanulak-rare-ursid-hybrid-T90BJ1.jpg)