Cold-tolerant breeds: Dogs with thick coats and a high tolerance for cold weather, such as Siberian Huskies and Alaskan Malamutes, may be comfortable outdoors in temperatures down to 0 degrees Fahrenheit (-18 degrees Celsius) or even lower. However, it's still a good idea to monitor their body temperature and behavior to ensure they're not getting too cold.
Smaller breeds and dogs with short coats: Smaller dogs and dogs with short coats are more susceptible to cold weather and should be brought inside when temperatures drop below 40 degrees Fahrenheit (4 degrees Celsius). These dogs can lose body heat quickly and may become hypothermic.
Senior dogs and puppies: Senior dogs and puppies are also more vulnerable to cold weather and should be brought inside when temperatures drop below 50 degrees Fahrenheit (10 degrees Celsius). Their immune systems may be weaker and they may have a harder time regulating their body temperature.
General signs of cold: In general, if you notice your dog shivering, whining, hunching its back, or showing other signs of discomfort, it's time to bring them inside. It's always better to err on the side of caution and bring your dog inside if you have any concerns.