Dog outside in the cold. Hypothermia in dogs refers to a body temperature below 98 degrees. This can occur when a dog is exposed to cold outdoor temperatures, or when a dogs internal temperature regulatory mechanisms are not working properly due to illness or injury.
Understanding Dog's Body Temperature Regulation. Understanding how dogs regulate their body temperature and the differences between human and canine heat tolerance is crucial in determining when it is safe to take them for walks in hot weather.

Do dogs like walking in the rain? A low angle view of a group of people who are heading tot he starting line for a fun run that they are taking part in at Leazes Park in the North East of England, The race is inclusive of pets and people of all ages and abilities.

6. Check the Temperature: A normal temperature for a healthy dog ranges between 101F and 102.5F (38.3C to 39.2C). If the temperature is higher than 103F (39.4C) or lower than 99F (37.2C), contact your veterinarian as it may indicate a. health issue.
Hypothermia in dogs is defined as a body temperature of fewer than 98 degrees Fahrenheit. This can happen when a dog is exposed to cold external temperatures or when the dog's internal temperature regulation mechanisms fail due to disease or injury.