The world’s oldest-known wild bear has died of old age in northern Minnesota at the age of 39½.

Known to Minnesota DNR researchers as Bear No. 56, the female American black bear was first captured and radio-collared in July 1981 by DNR scientists during the first summer of a long-term research project on bear population ecology. The bear was 7 years old at the time and was accompanied by three female cubs.

Bear No. 56 became a significant animal in the DNR research project. During a 32-year study period, she and her many offspring provided an almost uninterrupted record of reproduction, survival, movements and, eventually, senescence (aging), within a single matriarchal lineage. Data from this bear and her offspring have contributed significantly to the scientific literature on black bear biology. Read more