There are basic five-point check as a tip to taking care a dog you can do.
Check for your dog weight regularly, at least once per month to check if your dog weight is still healthy, slightly overweight, or underweight.
Check for the signs of fleas -black flakes or specks to maintain healthy coat and skin.
Gently pull down the lower eyelid to check for a pink colour. The whites of the eye should be glossy white with no redness. For their ears, it should be clean in a pink colour, free of debris and strong odors.
Open the dog's mouth to inspect all his teeth. Beware of tartar build-up, this should be removed by a veterinarian and chew snacks designed to help reduce plaque and tartar build-up like Pedigree Dentastix. Brushing your dog’s teeth regularly is also a great way to keep his gums and teeth healthier and fight gum disease
Check for unusual lumps or bumps by placing both hands on top of your dog's head and moving down under the chin. Next, move your hands behind the front legs, under the shoulders, down the back, over the hips, and down the legs. Inspect your dog's claws and footpads for cuts or cracks. Report unusual symptom to a veterinarian.