| Agoutis are terrestrial, denning at night in burrows among boulders, tree roots, hollow logs, or brushy tangles on the forest floor. |
| Compared to other canids, the male fox is probably one of the most attentive and best providers of food during the denning period. |
| Two of the three largest known polar bear denning areas are on Wrangel Island and the Svalbard Archipelago. |
| Most populations rely on terrestrial habitats for maternity denning and some take refuge on land in areas where the sea ice melts completely during summer. |
| Harington reported that extremely hard snow or very soft snow was unsuitable for denning. |
| Known denning areas should be avoided when planning development on or near an esker. |
