What causes a dog to have a runny nose?

My Rottie has a runny nose. She has had all of her vaccinations and has no other symptoms. What are some things that could cause a runny nose?

    What causes a dog to have a runny nose?

    My Rottie has a runny nose. She has had all of her vaccinations and has no other symptoms. What are some things that could cause a runny nose?...
    Other Pet Discussions : What causes a dog to have a runny nose?...

    • What causes a dog to have a runny nose?

      What causes a dog to have a runny nose? Other Pet Discussions
      My Rottie has a runny nose. She has had all of her vaccinations and has no other symptoms. What are some things that could cause a runny nose?

      What causes a dog to have a runny nose?

      What causes a dog to have a runny nose? Other Pet Discussions
    • If the discharge is Yellow/Green/or Gray then it's probably a URI(upper respiritory) but if it's clear, it's just allergies. You can try Human Benedryl( 1 mg per pound). Take Care!