Select from:
1). The breathing might cause the mucus to turn red. Your dog may also begin to show : Stuffy, labored breathing: this is usually caused by distemper, and your dog will have an labored inhalation of mucus.
2). Some dogs may also let out " hiccup " sounds, which means that they breathe through their nose. Your dog's skin may also get sweaty.
3). His breath may be yellowish to reddish and be slightly more labored than normal. These are the most common symptoms of distemper.
4). Your dog may have labored breathing if the infection is in his chest. Oftentimes, the dog will develop inflamed and infected nasal passages, which causes snotty nasal discharge.Choose from options above and answer: What most naturally follows?

How to recognize distemper symptoms in dogs
Look for respiratory tract signs.
The first symptoms usually affect the respiratory tract. Your dog may sneeze, cough, or have thick mucus in his nose.
Answer:
4).