If you do not have that, then you will need to call the reservation center at 1-800-IFLY-SWA (1-800-435-9792). Let them know that you would like to get your old confirmation numbers from past flight.
Heart disease is common in dogs. Valvular heart disease is the most common cause of heart disease and is especially common in small breed dogs. The mitral valve is the valve of the heart that is most often affected.
Infection. Any kind of infection -- including serious ones such as parvovirus, distemper, kennel cough, leptospirosis, and heartworm disease -- can make your dog lethargic. 1  Parvovirus is spread through feces. 2  Symptoms of parvo can include lethargy, vomiting, diarrhea, and abdominal pain.