Dog hadn't eaten for 2days after eating a dried fish. Glucose given on the IV but the dog died in 3rd day.May I know the reason for the death

Hey.. my pup mario swallowed a bone by accident a week ago and cried a lot after he swallowed it.. We helped him by tapping his back and pulling up his hind legs.. we rushed him to the vet and he vomited once while on the car.. (he sometimes vomits while travelling) there was no bone or anything in his vomit. After reaching the local vet he barked once when he saw another dog and then stopped. The vet looked at him and said that thers no bone stuck in his throat and that he’ll be fine.. but from that day he lost his appetite. I tried to feed him milk he only took a sip or two and then moved away as if in pain. And he also lost his active mood.. he was a very active pup who never sits still when he is released. But now he feels week and lies under the couch all day. We were concerned and took him to the vet again. And he gave him an antibiotic injection and some medication for gas and apetite. We waited for two days but he was not getting better instead he also stopped sipping milk.. we were very concerned and took him to an advanced vet hospital where they took his X Ray and examined it to confirm that there was no foreign body in his throat.. they then told me that he has a swelling in his throat and probably has an infection. And they also told me that due to the swelling his breathing is mildly heavy. They prescribed 5 doses of antibiotic injections (one per day) along with 100ml of iv solution (DNS). We’ve been giving him this for 3 days now. He was feeling a bit relaxed for a while but then on the 3rd day (today) he developed a breathing problem.. his breathing has become very heavy and forced.. he feels week and he cannot lie down for more than 10 mins because his breathing is difficult. He just stands there and breaths for a while and walks around all the time.. he hasn’t slept at all till now ( about 20 hours ). We’re very worried and don’t know what else to do.. seeing him in pain is really difficult and makes me wanna cry.. how long will he be like this.. how long will he take to recover? Do I have to take him to the vet again and do an endoscopic examination? They hesitate to do it because he has to given Anastasia for the process.. what should I do?

I'm wanted to get a second opinion. Few weeks ago my 2 yr old sheperd, Carina, cut her pad. I took her to the vet because I could not get the bleeding to stop. They bandaged her up and told me to keep an eye on it sent me home with some antibiotics. And told me to try the antibiotics to see how she was because they know that she does not take well to any type of medication or antibiotics. Obviously should not take well to the antibiotics but I did give her four doses and kept wound clean 3 times a day. Carina is a extremely active and somewhat obnoxious if not giving attention type of dog. About a week ago one morning I was talking to the neighbor through the fence normally she be barking incessantly trying to get me to throw her stick. She barked once and her bark was hoarse and immediately stopped. In that early afternoon I was sitting out of the front of my house she was not playful and just sat in the grass which caused me to check her temperature. I noticed her temperature was 100.5. Throughout the night it ended up getting up to 103.7 but I ended up getting it to go down with cool rags and the fan. I took her to the vet the very next morning the minute they opened. They said for the most part she was fine and then her wound was healing nicely and I could stop the antibiotics and didn't think much of the fever or the bark. She is not really coughed or barked and she still eats and drinks. However the first day that I gave her the antibiotics after the cut she did throw up something but I figured it was because she did not have a full meal and she doesn't take well two antibiotics. She coughs sometimes and almost rarely but there are a couple of coughs that she has but it's usually after her eating grass or maybe taking in some water after going in the lake. She is not reading a fever anymore but very lethargic and doesn't want to play as much as she used to but still does. The vet seems to think she's okay but these are just symptoms that she does not usually exhibit and I'm worried if I should go get a second opinion from another vet so I thought I'd see what you thought. I was reading up on that disease about the pharyngitis or something more serious. She has had some of the symptoms like drooling but that was several weeks ago and that doesn't always happen now. About a month ago I noticed that her neck might have been a little bit more swollen but it didn't have any other symptoms at that time and it does not seem swallowing now. She hacked sometimes but it's usually after eating grass because she's always had a digestive issue. And I don't know if these are common things or something that I should be more concerned about if a dog had some kind of complication like kennel cough or the above-listed issue with the coughing and gagging and vomiting happen all the time would you see them all together or could they should be spaced out over a couple of months maybe I'm just reading too much into stuff.p.s.she no longer has a fever but she will not greet me when I come into the house she is very lack of energy and doesn't want to play in the morning after waking up and she will not bark and I'm guessing it's because it's hard for her she eats all food but won't eat her kibble but will definitely eat chicken or eggs or any other food I made for her so she doesn't have a complete loss of appetite

Hello, my female white German Shepherd recently has a decreased appetite. She’s also a very active dog that has suddenly gotten lazy. She just had heat 2 weeks ago so know it’s not that. The little I urge her to eat makes her give a painful expression and she usually backs off. She’s 4 years old. Please help me out. 😩 she did eat a dead deer gut a few weeks ago by accident on a hike. Im wondering if she caught a bacteria?