John Gill Bible Commentary

Then the beasts go into dens,.... When snow and rains are on the earth in great abundance, then the wild beasts of the field, not being able to prowl about, betake themselves to dens; where they lie in wait, lurking for any prey that may pass by, from whence they spring and seize it; and remain in their places; until the snow and rains are finished. As for other beasts, Olaus Magnus (m) observes, that when such large snows fall, that trees are covered with them, and the tender branches bend under the weight of them, they will come and abide under them, as in shady places, in great security, sheltered from the cold wind. The former may put us in mind of great personages, comparable to beasts of prey for their savageness and cruelty, who, when the day of God's wrath and vengeance is come, will flee to rocks and mountains, dens and caverns, there to hide themselves from it; Rev 6:15. (m) Ut supra. (De Ritu Gent. Septentr. l. 19. c. 15.)