Do bears poop during hibernation?

During 5-7 months in dens, bears accumulate feces in the lower 7-15 inches of the intestine to form a "plug" 1½ to 2½ inches in diameter. The fecal plug is simply feces that have remained in the intestine so long that the intestinal walls have absorbed the fluids out of it, leaving it dry and hard. read more

Even though a bear eats nothing during hibernation, intestinal secretions and cells continue to shed, producing fecal matter. This, along with hairs and even foot pad callouses that the bears ingest during grooming, create the poop plug. read more

This hibernation period tends to last for roughly six months, and during this time, some species, like the black bear (Ursus americanus), can drop their heart rates from 55 beats per minute to a mere 9, reducing their metabolic rate by up to 53 percent. read more