Capnocytophaga is one of the most common types of bacteria usually found in dogs' and cats' mouths. Both dogs and cats don’t get infected or sick with these bacteria, but they can make people sick. 

How it spreads: Rarely people can get in contact with this disease through close contact, bites, or scratches of the infected cats or dogs.  

Who is at risk: People with a weak immune system or already suffering from a disease like cancer who don’t have a spleen or are taking medications are more prone to catch the infection. 

Signs in dogs : As we have already discussed, Capnocytophaga bacteria live in the mouth of dogs and cats but don’t make them sick. 

Symptoms in people : People getting infected with these diseases may suffer swelling, blisters, redness or pain around the area of the bite or scratch, vomiting, fever, headache, diarrhea, and muscle or joint pain. Chances of serious complications, including kidney failure, gangrene, or sepsis, are very rare. Most of the symptoms appear within 1-14 days after infection.