The largest bear is on average still much smaller than a rhino. Unfortunately, terrestrial foods that polar bears eat (like snow goose eggs, berries, kelp, carrion) are less predictable and donât provide enough calories or fat to sustain the polar bear's massive body size, let alone to add to its body fat. Like grizzly bear, the grolar bear displays brown patches around its eyes, foot, and back. A bear in Florida was actually spotted stealing, and then eating, a 20-lb bag of dog kibble from a resident back in 2015. However, please do not go feeding bears dog food. Adult male polar bears weigh 775 to over . The grizzly bear (Ursus arctos horribilis), also known as the North American brown bear or simply grizzly, is a large population or subspecies of the brown bear inhabiting North America.. Grizzlies eat a wide array of animals, plants and bugs. Pizzly bears, also known as grolar bears and nanulaks, are a cross between a polar bear and a grizzly bear. The grolar bear cubs had slightly leaner head resembling polar bearâs and it has marginally broader head like grizzly bear. Brown bears eat up to 90 pounds of food per day in autumn and weigh twice as much as when they emerge from their dens in the spring. During the denning period, bears do not usually eat or drink, though some bears have been observed leaving their winter dens and feeding on winter-killed animals. Adult brown bears face few predators. It took a much-deserved nap. Pregnant grizzly bears even give birth in their sleep! The bears settle in their dens to hibernate for the winter. It's called a "pizzly" or "grolar" bear, and is so rare only a handful of sightings have been confirmed in the wild -- and no one can say for sure how many even exist. During the breeding season, a male may attend a female for up to two weeks for mating. Although polars and grizzlies are genetically similar, they tend to â¦ Species Ursus arctos horribilis is omnivorous. Grolar bear is primarily recognized by its creamy white fur which is a trait of a polar bear. Grizzly bears do indeed eat meat, but they are omnivorous creatures and therefore chow down on a lot of other things, too. Until about 10 years ago, few believed this hybrid grizzly-polar bear even existed in the wild at all. The hybrid is known as a grolar bear, pizzly bear, or nanulak. Grizzly bears are omnivorous, eating a mixed diet of grasses, berries, roots, fish and small mammals. Scavenging Behavior. There are animals much larger than bear that could kill it without much difficulty. When these animals cross paths, they can naturally crossbreed because they are so closely related. This deep sleep allows the grizzlies to conserve energy. A rhino. 1,500 pounds, while adult females weigh 330 to 650 pounds. In fact, many urban bears are forgoing hibernation as they learn that people provide good winter forage â such as birdseed, pet food and garbage. Conservation Status . Depending where they live, they may be attacked by tigers or other bears. Afterward? They can be found wild in Canada because global warming is causing ice caps to melt therefore forcing polar bears into grizzly habitat. Grolar bears, also known as pizzly bears, are the cross between grizzly bears and polar bears. Grizzly bears can be seen in close proximity in areas of abundant food, such as berry patches and salmon spawning areas. A rhinoâs horn can pierce the metal on a car door, much tougher than the flesh on a bear. Their heart rate slows down from 40 beats per minute to 8, and they do not go to the bathroom at all during these months of slumber. Hey â a bearâs gotta eat what a bearâs gotta eat.