My little 4 lb Chihuahua, "Baby" loves food. She eats her kibble so fast, I have started putting a little warm water on some of it, and giving her smaller portions, twice a day. She eats so fast, she burbs. I had changed her food to adult to try it, but switched back to the growth formula, because the kibble is smaller. She seems to have reflux, but never actually throws up. She also gags every now and then. Sometimes I also hear a little rattle or heavy breathing like she is a bit congested, which I hear is common in small Chi's. She is 14 months old, energetic, happy and playful. Eats and drinks normal amount, but is always ready for a treat. I have read about Chihuahua's and reverse sneezing and Collapsed Trachea. She does not "honk". Her last check up at the Vet's was 4 moths ago for a Rabies Vacc.