Grizzly Bear 'Super Mom' Gives Birth To Her 17th Cub Despite Her Old Age

24-year-old Bear 399 from Grand Teton National Park, Wyoming has produced a new litter despite her age. She gave birth to four cubs. which in itself is extremely rare as bears on average only have two or three. 399 has become one of most famous grizzly parents in history and even has her own social media accounts.

'We were in awe of the big animal and it was apparent we were no longer the top of the food chain. There is no feeling like hiking in bear country, it puts you on high alert and your head on a swivel. After that first encounter, we were obsessed.' Grizzly bear 399 was born in 1996 and first tagged by researchers in 2001 as part of a study of bears in the Greater Yellowstone Ecosystem. In 2011, 399 made headlines when she and her five-year-old daughter, 610, both started raising cubs in the same area.In what is thought to be the first recorded of behaviour of its kind, 610 adopted one of 399's three cubs and raised it as her own successfully to adulthood.