Amazon.com: Polar Bear vs. Grizzly Bear (Who Would Win?): 9780545175722: Jerry Pallotta, Rob Bolster: Books
From brown to white – evolution of the polar bear
Hybrid 'Brolar Bears' Could Spread Through The Arctic as The Planet Warms : ScienceAlert
Polar bear | Description, Habitat, & Facts | Britannica
Responding to Environmental Change - Bears (U.S. National Park Service)
Brolar-Bear Hybrids Could Take Over Northern Siberia, Expert Warns
Brown bear - Wikipedia
Polar Bears Did Not Descend From Brown Bears, DNA Study Indicates - The New York Times
Grizzly–polar bear hybrid - Wikipedia
Pizzly Bears, a Polar and Grizzly Hybrid, Spread Due to Climate Crisis
Arctic Bears | How Grizzlies Evolved into Polar Bears | Nature | PBS
Polar Bears And Grizzlies Producing Hybrid Offspring as Arctic Melts - DER SPIEGEL
Polar bears, brown bears interbred during warm periods. Is it happening again? - CSMonitor.com
DNA study clarifies relationship between polar bears and brown bears
Pizzlies, Grolars – Why Hybrid Grizzly Polar Bears Aren't The Answer | Polar Bears International
When outdoors, stay alert and 'Bear Aware' | Bureau of Land Management
Brown bears are mating with polar bears and creating a more climate resilient hybrid animal | Daily Mail Online
Bears: Polar Bears, Black Bears and Grizzly Bears (Kids Can Press Wildlife Series): Hodge, Deborah, Stephens, Pat: 9781550743555: Amazon.com: Books
Grizzly, polar bear cubs find friendship at the Detroit Zoo
Pizzlies, Grolars – Why Hybrid Grizzly Polar Bears Aren't The Answer | Polar Bears International
