São Brás Golf Society, SBGS
A player is entitled to free relief from interference by animal holes in certain circumstances. The player must first be able to show that if there was not an animal hole, and the ball was in the same place, they could take their stance and play a reasonable stroke. If not, no free relief is granted and the ball must be treated as unplayable.
An animal hole is any hole dug in the ground by an animal except for holes dug by animals that are defined as loose impediments. It also includes the loose material dug out, a worn track or trail leading into that hole, and any area on the ground pushed up or altered as a result of an animal digging underground. Animal footprints that are not part of a track or trail leading into an animal hole do not qualify for free relief (prints on a green may be repaired).
Free drop method: mark the nearest point of relief, then drop within one club length no nearer the hole, keeping within the marked relief area so the ball comes to rest inside it. See explanatory video: https://www.nationalclubgolfer.com/rules/animal-scrapings-relief-rules/