There are many factors to consider when choosing the right dog food for your puppy. Puppies need twice as much as adults need. Puppy dog food must support the development of muscles, teeth, organs, healthy skin, and coats. Pet owners should start introducing solid food to puppies as early as 4 weeks of age. It should be given to puppies several times a day (2~3 daily meals), provided with dam’s/replacement milk or clean drinking water. As the dam’s milk no longer meets puppies’ nutrient requirements, it also gives time for the dam’s body to recover from gestation and lactation.
Vitamins and supplements can also be given to puppies. Some small breeds may need extra electrolytes as they are prone to hypoglycemia. With proper nutrition and support, puppies can be weaned at 6 weeks of age.
How to choose the best dog food for my puppies?
The first thing to consider is the breed of your puppy. Dogs are very diverse species in terms of size, which is a variable in growth development. Small breeds usually take a year to mature, while large~giant breeds take 2 years to reach maturity.
Since large breed puppies have a slow growth rate, the nutrients are provided gradually. Dog food for large breed puppies contains fewer calories to avoid gaining excessive weight. While small breed dogs have a very fast growth rate, calorie requirements are much higher than large breed puppies.
Secondly, check if the dog food you are providing to your puppies is complete pet food.
- Complete pet food means pet food which, by reason of its composition, is sufficient for a daily ration. When a complete pet food is fed for an extended period as the only source of nutrients, it will provide all the nutritional needs of the puppy.
- Complementary pet food means pet food that has a high content of certain substances but which, by reason of its composition, is sufficient for a daily ration only if used in combination with other pet foods. 
This information should be checked by pet owners as some puppies are not required to take supplements if fed with complete pet food. Supplementation of a complete diet can be risky and may lead to growth abnormalities. 
Complete pet food for medium-small breeds
ROYAL CANIN® Mini Puppy in Gravy is specially formulated with all the nutritional requirements of your mini puppy in mind and is ideal for puppies up to 10 months old that will have an adult weight of up to 10 kg.
ROYAL CANIN® Mini Puppy in Gravy has an exclusive complex of antioxidants to boost the juvenile immune system as it is still maturing, including vitamin E. ROYAL CANIN® Mini Puppy in Gravy also provides several beneficial nutrients that help improve the overall digestive health of your puppy.
This Royal Canin Wet Medium Puppy helps to support bodily defenses, thanks to an antioxidant complex with vitamin E. This wet food contains yeast that gives your puppy real health advantages.
It is intended to promote healthy development, suitable in the first 12 months of life for puppies and young dogs between 11-25kg.
With their endless energy, determination, and smarts, it’s clear your small breed puppy is anything but ordinary. Unleash their extraordinary potential with Eukanuba Puppy Small Breed dry dog food. This complete and balanced puppy food is made to fuel your growing companion’s body, mind, and energy.
Your small-breed puppy is growing fast, requiring a diet that is rich in protein and fat from fresh, whole animal ingredients to support proper development. Brimming with meat, organs, cartilage, and bone from free-run chicken and wild-caught flounder, plus nourishing cage-free eggs delivered fresh or raw to our kitchen by people we know and trust, ACANA Puppy Small Breed has everything your growing puppy needs for optimal growth and development.
Complete pet food for large breeds
ROYAL CANIN ® Maxi Puppy in Gravy is specially designed for puppies up to 15 months old that will have an adult weight between 26-44 kg, with all the nutritional requirements of your big puppy in mind.
ROYAL CANIN® Maxi Puppy in Gravy provides an exclusive complex of antioxidants, like vitamin E, to support your puppy’s natural defenses throughout this main growth phase, which helps support the immune system of your puppy when it is still growing.
ORIJEN Puppy Big is specially developed to provide your puppy with nourishing protein and good fat from whole animal ingredients. For a concentrated source of protein, two-thirds of our animal ingredients are FRESH or RAW.
EUKANUBA’s best Puppy Food for Large Breeds, recommended for large dogs such as German Shepherds, Labradors, Rottweilers and Golden Retrievers. As large breed puppies grow so fast this canine diet contains tailored levels of energy, calcium, and phosphorus to help promote optimal joint and bone development.
Choosing the best dog food for your puppy can be tricky, with many trials and errors. Once you found the perfect dog food for your puppy, it will be good for his gut health to maintain a certain diet. Changing dog food frequently or sudden changes can cause stomach upset.
Follow the feeding guidelines, give a good amount of food, and always provide clean drinking water.
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Nutrition Guidelines. The European Pet Food Industry.
Pet Nutrition Fact Sheet. Pet Food Manufacturers Association. https://www.pfma.org.uk/puppy-nutrition-factsheet