Its a maltese and they are small and i also have a chiwawa. They are small dogs and like prety often they are gaging kind of or Hacking not throwing up like breathing hard. You can hear it. I think it happens to all little dogs? I dont know how to really explain what they are doing but they are breathing really hard making a gaging noise (but their not throwing up) do any of you know whats happening? =/
So, I'm a fucking retarded when it comes to animals, but Kat on IRC is pretty knowledgeable. She seems to think it's possible that they have "kennel cough" which can be quite serious. It's also very contagious, and she wants to know if you have your dogs vaccinated for kennel cough. Personal judgment at this point: Go2vetplx.
Which reminds me of a digg article http://digg.com/pets_animals/Teacup_dogs_inbred_to_be_tiny_only_live_a_few_years
Do they smoke? lol but no id say its kennel cough, our dogs had it once before, just take them to the vet and get them some antibiotics and theyll be sweet as. Heres a little more info for you: http://en.wikipedia.org/wiki/Kennel_cough