7 Dog Breeds That Don’t Do Well In The Heat by waggingtonpost on March 26, 2016 in DOGS 0 #6 – Cavalier King Charles Spaniel Their short muzzles make it hard to breathe, and they’re another breed prone to obesity. Manage their weight and avoid letting them run around in the heat. Next Page » Pages: 1 2 3 4 5 6 7