The timeline for feeding your new puppy changes rapidly over the first six months. Learn what and how you should feed your puppy based on the key development milestones she will experience.
Due to breed differences and animal individuality, it is impossible to predict exact dates for a puppy’s growth and development milestones. However, by using the following milestones as a guide for healthy growth, developmental problems can be spotted — and possibly prevented — early on. By knowing these milestones, you’ll also know when your puppy is ready to begin weaning.
| Age | Milestone | 
|---|---|
| 7-10 days old | Puppies double their birth weight. Puppies begin to urinate and defecate on their own.  | 
| 10-18 days old | Puppies attempt to stand.   Puppies’ eyes begin to open. Puppies’ ears begin to open.  | 
| 18-21 days old | Puppies hear and respond to noises. Puppies begin to walk.  | 
| 3 weeks old | Begin weaning process for orphaned puppies. Puppies begin responsive vocalization. Deciduous (baby) teeth will begin erupting.  | 
| 4 weeks old | Begin weaning process for mother-fed puppies. | 
| 3–6 months old | Puppies’ adult teeth erupt. | 
When your puppy is ready to begin weaning (at around 4 weeks for mother-fed puppies and 3 weeks for orphaned puppies), use this step-by-step process:
 
The entire process should take approximately three weeks.


 
 If you see signs of aging in your dog, don't wait to feed him the proper diet. Feeding a high-quality, premium food throughout your dog's life is the best way to help him age gracefully. When your dog reaches his mature years, choose a food like IAMS™ ProActive Health™ Mature Adult for nutrition suited to this stage of life. 'Good nutrition starts early,' says Dr. Michael Hayek, an IAMS research nutritionist who specializes in geriatric nutrition. 'It should be viewed as proactive health care because it may be a deterrent to aging later on.'
 
If your dog already exhibits signs of aging, look for a high-quality, balanced maintenance food that caters to his changing metabolism. When you're shopping for a formula that's right for your dog, look for and compare these important points: