The timeline for feeding your 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.


Since we cannot directly communicate with our dogs, there are certain behaviors and actions that immediately concern us. One of these behaviors is a dog shaking. No, not the fun way they shake off water starting from their nose all the way to the end of their tail. We’re talking about that full-body trembling you’ve likely seen your pooch do from time to time. Why do they do it? And is it something you should be worried about?
A majority of dog owners in an IAMS™ survey* (64%) think the reason behind a dog shivering is that they are cold. Other top responses were because the dogs are scared (57%) or anxious (54%). High-fives all around because it turns out there are a number of reasons why dogs shake, and all those are possible correct answers. Here are some probable reasons behind a dog trembling:
Just like their owners, dogs will often shiver when cold. Dr. Tammie King, Applied Behavior Technical Leader at Waltham Petcare Science Institute, says: “Dogs shiver in response to falling temperatures. Dogs with short or no hair are especially susceptible. You should get them warm, put coats on them or bring them inside.”
They're They're anxious or scared
“Shaking is a response to epinephrine or adrenaline secretion — a sign of anxiety where the dog is on high alert,” says James Serpell, B.S., Ph.D., Professor of Humane Ethics & Animal Welfare at the University of Pennsylvania School of Veterinary Medicine. You may notice this when you’re at the vet or there’s a situation where they feel threatened. Dr. Serpell also offers a way to help in some cases: “Identify what’s triggering the behavior. Provide them comfort. Going forward, you can gradually desensitize your pet to the thing it’s afraid of.”
Seizures, a serious medical condition, can be hard to differentiate from normal shaking. Dogs may shake for numerous reasons, with most being relatively harmless. However, seizures require immediate medical attention. Especially because this health issue can result in your dog’s muscles seizing up, causing a loss of mobility and awareness of its surroundings. Hence, if you notice violent shaking in your dog, rush to an emergency room as quickly as possible.
This is probably the most comforting answer to every dog owner’s concern. Apart from being a response to anxiety or stress, a dog’s trembling can also be a result of excitement. This trembling or shaking is not a matter of concern and will stop once the animal calms down.
Trembling can also be a sign of serious issues like injury, poisoning, or kidney disease. Dr. Jo Gale, BVetMed CertLAS MRCVS, Senior Manager, Global Science Advocacy at Waltham Petcare Science Institute urges pet owners to be vigilant: “If a pet is unwell in another way, they could be trembling.” If their shaking is accompanied by symptoms like diarrhea, limping, or vomiting, you should consult your vet straight away.
Shaker syndrome has been observed in white dogs of smaller-sized breeds. It causes shivering in a dog’s entire body. The precise cause of this syndrome is not yet known; however, your vet will be able to prescribe medications upon close examination.
Old age is also a pretty common cause of shaking and shivering in dogs. This is because age reduces tolerance to even a slight amount of cold. Besides that, shaking can also be a result of other old-age-related issues like joint pains or weakening of limbs.
As mentioned earlier, you should immediately consult a vet if, along with shaking, your dog is also experiencing vomiting, limping, or diarrhea. Even though shaking is a common symptom of old age-related issues, you must take your dog to the vet. If they are suffering from joint pain, early treatment is necessary. It is also advisable to visit a vet if your dog’s shaking or shivering hasn’t stopped even after a few minutes.
Now that you know why dogs shake, ensure that you pay close attention to your furry friend’s well-being. Though most of these reasons pose no threat to its health, some can be concerning. Additionally, look for other symptoms like diarrhea, vomiting, fever, and blank stares as they can help you gauge the seriousness of the situation.