The Oregon Humane Society has sent a team to rescue as many as 100 dogs living without shelter in cold weather on rural property.

Officials say some of the dogs are living underground in holes covered with planks, while others are chained to farm equipment and have little or no shelter from the snow, wind and subfreezing temperatures.

The Humane Society says the team leaving Tuesday was responding to a request from Harney County Sheriff David Glerup after three people were charged with animal neglect.

Deputies were called by county social workers who were investigating an unrelated complaint against the dogs' owners.