The major cause of Salmonellosis is Salmonella bacteria. This infection spreads through consuming contaminated food. It can also spread from people to people and animals, including dogs. 

How it spreads : Most commonly, people become infected after consuming the contaminated food or getting in contact with or touching animal poop. On the other hand, dogs can develop Salmonellosis by eating infected rodents, birds, and raw or contaminated pet food. 

Who is at risk : This infection can infect anyone. But infants, children less than five years old, adults 65 and older, and people who have weakened immune systems or suffering from fatal diseases are at a higher risk of illness. 

Signs in dogs : Adult dogs typically do not show signs of infection. Infected puppies may have diarrhea.

Symptoms in people : Signs including fever, abdominal pain, and diarrhea usually appear within 6 hours–4 days after people get infections. These symptoms may last for 4–7 days.