We have a 1 year old blue heeler and an 18 month old bloodhound who live in our fenced backyard together. We bring them in the house and crate them every night. Both had their full puppy series of shots last spring, and it's not quite time for their yearly vaccinations. On Friday morning, when I went to let them back outside, I noticed the heeler was "coughing" -- it sounded like she had eaten something and was trying to spit it back up. I let her out with her water and went to work. She's still doing it. She doesn't cough at all when she's inside sleeping, but throughout the day as she's walking around or if she gets exciting, she starts 'harking' again and sometimes spits up foamy white spit. I did a quick internet search and it seems like she might have kennel cough? Is that possible, even though she was vaccinated? And what should I do - is there anything I can give her at home now to help? I get paid Wednesday morning so I plan on taking her straight to the vet then. In the meantime, should I quarantine her from our bloodhound (who shows no signs)?