Short answer: dogs start feeling cold well before human temperatures, with typical discomfort starting around 45°F (7°C). Small, short-haired, young, old, or sick dogs can feel cold earlier, and temperatures below about 32°F (0°C) increase risk of cold-related problems. Healthy dogs generally tolerate milder cold, but all dogs can be affected if wind, dampness, or humidity amplify the chill. Details and guidance

• When dogs feel cold
  • General threshold: around 45°F (7°C) is where many dogs begin to feel uncomfortable, especially those with thin coats or small size. Below 32°F (0°C) caution is advised, particularly for small or thin-coated dogs. Below 20°F (-7°C) pose significant risk for all dogs. [typical guidance from veterinary and pet-care sources]
  • Warning signs of being too cold: shivering, seeking warmth, reluctance to move, curling up, tucked tail, lifting paws off the ground, and seeking shelter indoors or a warm spot. [typical guidance]
• Factors that affect a dog’s cold tolerance
  • Coat type: thick double coats vs thin or short coats. Insulation reduces heat loss.
  • Body condition and age: puppies, senior dogs, or those with illness may have reduced ability to regulate temperature.
  • Humidity and wind: damp and windy conditions cut effective temperature and raise cold stress.
  • Activity level: moving around generates heat; sedentary dogs feel cold sooner.
• What to do if your dog is cold
  • Bring indoors and provide a warm, dry resting area.
  • Offer a blanket and a moderate temperature environment; avoid direct heat sources like space heaters or hot water bottles that can cause burns.
  • If the dog shows signs of hypothermia (extremely cold, lethargic, stiff, or collapses), seek veterinary care immediately.
  • For outdoor time, limit exposure in extreme cold and monitor closely; consider dog boots for icy surfaces.
• When to seek veterinary help
  • If your dog’s body temperature drops significantly or if signs of hypothermia or frostbite appear, contact a veterinarian promptly.
  • If cold-related symptoms persist after warming or if there are other concerning signs like pained behavior, lethargy beyond normal cold response, or coughing/wheezing, check with a vet.

If you’d like, share your dog’s size, coat type, age, and typical outdoor conditions, and I can tailor the rough temperature guidance and precautions for you.