Certain dog breeds are more susceptible to heat exhaustion due to their physical characteristics and physiological traits. Here are some breeds that are particularly vulnerable:

1. **Brachycephalic Breeds**: These dogs have short noses and flat faces, which can impede their ability to cool down effectively. Examples include:
- Pugs
- Bulldogs (English and French)
- Boston Terriers
- Shih Tzus

2. **Heavy-coated Breeds**: Dogs with thick fur coats may struggle in hot weather, even if they are not brachycephalic. Examples include:
- Siberian Huskies
- Alaskan Malamutes
- Saint Bernards

3. **Obese Dogs**: Any breed that is overweight can be at a higher risk for heat exhaustion due to the extra body mass, which can impede their ability to regulate body temperature.

4. **Senior Dogs**: Older dogs may have decreased stamina and may not cope with heat as well as younger dogs, regardless of breed.

5. **Puppies**: Young dogs, especially those under six months, may not be able to handle heat as well as adult dogs.

To help prevent heat exhaustion, it's important to keep your dog cool by providing plenty of water, avoiding strenuous exercise during peak heat hours, and ensuring they have a shaded area to rest. Signs of heat exhaustion include excessive panting, drooling, weakness, and confusion. If you notice any of these symptoms, it's crucial to cool your dog down immediately and consult a veterinarian if necessary.

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Topics covered in this question:

Dog Care Pet Health Heat Exhaustion Dog Breeds Summer Safety