I have a mini pinscher, male and is 3 years old. Last 2 weeks, he started losing appetite, became weak and had fever. At the end of that week, we brought him to the vet and he was injected with antibiotics. He was also prescribed an antibacterial medicine, an antipyretic, a nutritional supplement gel and a dextrose powder. A few days after and he gained appetite and lost his fever. However, I noticed that his breathing is shallow and his abdominal muscles kept on contracting. He again lost his appetite but he never vomitted. At the end of last week, I brought him again to the vet. He was again checked and then injected with medicine for liver protection and to boost his immune system. We also bought canned dog food for dogs with no appetite. He started eating though in small amounts. Currently, I am still continuing his antibacterial medicine from his first visit and the dextrose powder as well. What is bothering me now is his shallow breathing and his somewhat bloated chest area. The vet we visited only examined him via palpation and by looking down his throat. Tomorrow, I want to go to a vet with equipment for blood tests but I want to ask for opinion from as many vet as possible. I am not really satisfies with how my dog was examined the first two times.