She's a year old lab mix. She only gets it in cold/chilly weather, so the vet said she probably had a slight cold and gave her antibiotics. Well, we finished the round of antibiotics about 3 weeks ago and it is still happening every single time we are in like 60° Fahrenheit or below weather. Below is a pic, but she's only got it a little right here, there's been many times where she's got much more running down. At this point, I'm thinking allergies, but this doesn't happen in warm weather or indoors. I do have a cousin that's actually allergic to cold weather, could it be the same with my pup?