Unlike exposure to other toxins, many Agent Orange symptoms tend to take several years to decades to present, and can cause a host of health issues. Initial symptoms tend to include common side effects found with many other illnesses, as well as neurological and psychological problems.
Heavy breathing or panting. Most dogs will pant from time to time because they are stressed or excited, but when dogs pant for no apparent reason and the panting becomes excessive, this can definitely be a sign that a dog is experiencing pain.
In dog health, panting is usually not a sign of illness in a healthy dog. Panting is a normal canine respiratory response to heat, excitement, anxiety or exhaustion after intense physical activity. However, if your dog pants for no obvious reason, the panting may indicate a health problem.ormal reasons for panting include: 1  Heat: Panting is the main way a dog cools down when he gets hot. 2  Recent physical activity: A dog pants to catch his breath and normalize breathing after a strenuous physical activity like running. 3  Nervousness or excitement: A dog may also pant in response to anxiety or excitement.