It is the responsibility of the owner to understand when something is not quite right. Therefore, all owners should be educated in the most common dog illnesses, what the symptoms are, and what to do next.
Skin issues - You may notice your good boy scratching away at a particular spot on his body. Skin problems are one of the most common issues among dogs.
Ear Infections - If your dog is shaking his head from side to side a lot and is trying to itch his ear, he may well have an ear infection.
Ear infections - If your dog displays symptoms for more than a day, you should take him to the vet, where he will probably be prescribed some antibiotic or antifungal ear drops.
Urinary tract infection - It is quite common for a dog to have a urinary tract infection. Some people think it is just bad training or a dodgy dog personality,
Vomiting - Just like humans, there are a myriad of reasons that dogs might vomit. If your dog vomits just once, then it might not be anything to worry about.
Diarrhea - Diarrhea is often the accompaniment to vomiting. Similar to vomiting, if your dog has diarrhea once, it is probably not an issue.