The word "burrow" means to dig or make a hole in the ground, often for the purpose of creating a cozy and safe home for certain animals like rabbits or groundhogs. Full definition
They live in tunnels burrowed into lumps of horse dung. (newscientist.com)
As its name implies, it lives in deep burrows in soft sediment and can make large sand mounds around the entrance. (AmbergrisCaye.com)
The name «Cairn» came from this breed's habit of burrowing into large piles of stones and barking at rodents such as rabbits and fox until a farmer would arrive and take care of the vermin. (puppy-training-solutions.com)