Before talking about dog care there are some facts about dogs.
Your dog can detect odors about a billion times better than you can.
The average lifespan of a dog varies from 8 to 16 years, depending on breed type, size, genetics and care.

Taking care of your pet dog is same as taking care of yourself there are so points here we will discuss some of them.

Feeding: - 8 to 12 week old dog must give four meals per day. Up to 6 month old puppies 3 meals per day are enough from 6th month until one, year two meals a day and after celebrating 1st birthday of your dog one meal a day is sufficient.

Tip: - Dogs should be fed with high quality pet food, look for some pet food brands like “puppy food” don’t use cheap brands it may result in vitamin and mineral imbalances and most importantly don’t forget to wash to food.
Tip2: -Dry fruits when mixed with water are the best balanced diet for adult dogs.

Top3: - Clean, fresh water should be available at all times
Exercise: - like us dogs need exercise to burn calories and keep healthy, exercise and fun games let them avoid boredom urges to dig, herd, chew, retrieve and chase. Exercises may vary depending on, age, level of health and breed mix.

Training: -Teaching your dog the basics—"Sit," "Stay," "Come," "Down," "Heel," "Off" and "Leave it"—will improve your relationship with your dog. Start teaching manners to your dog in his childhood later it will cause trouble for you. Contact your local humane society or SPCA for training class recommendations in case your dog is aggressive. While your dog is in public make sure your pet come back to you all the time whoever you say a word.
Bad Breath: - if notice your pet has bad breath and other signs of ill health such as vomiting, weight loss, depression, excessive drinking visit pet doctor asap. If your dog smell like ammonia or urine then it is possible that your dog have a kidney infection. Usually bad breath in dogs is common and not that serious.