As spring eases in, bears in Yellowstone National Park have begun to emerge from hibernation, the National Park Service (NPS) announced this week.Officials reported seeing grizzly bears, one of two bear species in Yellowstone, in the northern region of the park on Monday.The emergence of these large animals presents additional safety considerations for visitors to the park, the NPS noted.    “It’s important to Be Bear Aware!” they said in a Facebook post.Officials provided the following advice to help visitors protect themselves as they venture throughout the park, which they say is “Bear Country”:In addition to grizzly bears, black bears also inhabit Yellowstone National Park. Black bears are less aggressive than grizzly bears and are less likely to use their size to defend themselves.HOW TO WATCH FOX WEATHERBears enter hibernation to help conserve energy during the winter months, when food is more scarce. The NPS said the animals emerge in spring, when food becomes more available.