Since ringworm can spread between animals—and can even be transmitted to humans—here’s a look at what causes ringworm, how to treat it and how to protect your dog from getting infected.

Because of this, in our practice we usually treat lesions negative to the black light test as bacterial. If after two weeks, the culture is positive for ringworm then we change treatment.

UPDATED: October 1. The Ingham County Animal Shelter in Mason has restarted dog adoptions and intakes after an outbreak of ringworm. Cats are not available as of now.