Experienced and professional animal trainer provide their insights in answering this question :
A. It sounds like your puppy is either very weak due to an infection or has a problem in his brain. This is a very serious emergency. Many types of infections or neurological issues can be fatal in young puppies. Bring your puppy to the vet right now.

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

Potential causes include inner/middle ear infections, intoxication, strokes, tumors, infectious or inflammatory diseases (meningitis), idiopathic vestibular disease (also called “old dog” vestibular syndrome), or other less likely causes.
Most puppies are clumsy around this age. After all, most only learn to walk at 3 weeks of age and run at 5 weeks of age. They are developing their gross motor skills, which help them to run, play, and “hunt.” Their fine motor skills will come later. Puppies also learn to jump up at this stage.
Eight weeks is still quite young, so you can expect him to sleep more than a pup that is 12-16 weeks old; however, there are medical reasons for puppy lethargy including parasites, incomplete diet, infectious diseases, and some congenital birth defects.
Dogs shake and tremble for all kinds of reasons — excitement, pain, old age, even nausea. Shivering and trembling may be symptoms of something serious — like poisoning, kidney disease, or injury.
Some of the signs of parvovirus include lethargy; loss of appetite; abdominal pain and bloating; fever or low body temperature (hypothermia); vomiting; and severe, often bloody, diarrhea. Persistent vomiting and diarrhea can cause rapid dehydration, and damage to the intestines and immune system can cause septic shock.
Why Swaying Back and Forth Occurs in Dogs. Vestibular disease affects the nerves that send messages back and forth from the dog`s eyes, inner ears, and body. In doing so, it alters the dog`s ability to balance thus causing him to sway back and forth either while standing or walking.
Being clumsy may be something that your pup will grow out of, or it may just be a trait that your dog was born with. Some large breed dogs are just naturally clumsy, maybe because of their large feet. Whatever the reason, as long as it is not a medical issue, it is just another reason why you love your pooch so much.
Loss of balance in dogs often occurs due to inner ear infections. If your dog has an ear infection, you may also notice additional symptoms such as odor in or around the affected ear, head shaking and scratching, walking in circles, and eye flicking, as well as redness, swelling, or discharge.
Keep an Eye on Your Puppy

If your puppy is just tired, then they should recover after some rest. This may just be a nap or it might be a good night`s sleep. Tiredness alone isn`t typically a sign that you should worry. However, if your puppy seems tired for a few days straight, then that may be cause for concern.

Lethargy. If your dog is more sluggish or tired than normal, that could be a sign something is wrong. Is your dog all of a sudden disinterested in playing or walking? Your dog could simply be sore or tired when the weather warms up, but if this persists for more than two days, you should take your dog to the vet.
In shaking puppy syndrome, tremors begin shortly after birth, with symptoms beginning as early as 2 weeks of age. Besides shaking, the puppy may have difficulty walking, issues with balance and coordination, and their legs may appear more wide-based than normal in an attempt to stabilize themselves.
Just like humans, dogs can shake or tremble with fear — but there are several other reasons why your dog might be shaking. Shaking can be a sign that your dog is in pain, has low blood sugar, or has a medical condition like neurological disease.
Intestinal parasites: Intestinal parasites such as roundworms, hookworms, whipworms, coccidia, and giardia can cause gastrointestinal symptoms that can mimic the parvovirus.
Tests to diagnose parvovirus infection in a dog include fecal viral antigen testing and polymerase chain reaction (PCR). Fecal antigen testing is an effective diagnostic tool and is most commonly performed in the clinic.
If your dog is staggering, stumbling, or falling over, it could be the result of a number of medical issues, including injury, stroke, poisoning, or an infection.
Puppies generally stand by day 15 and take their first wobbly walk by day 21.
Puppies, especially those under six months of age, already tend to have an irregular gait. When they play they may run with their rear legs shifted sideways, or they may scamper in leaps and skips. If you really watch your puppy and notice a persistent abnormality, there is a cause for concern.
Behavioral changes can be your first indicator that something is wrong with your dog. If interest is lost in playing games, going for walks, eating, and sudden lethargy are good key indicators that something is wrong, and your dog is trying to tell you in their own way.
Common signs of vestibular syndrome in dogs and cats include falling, head tilt (rotation of the head with one ear held lower than the other), flickering of the eyeball from side-to-side or up and down (nystagmus), general wobbliness (often with the animal drifting to one side as he moves around) and/or circling.
Distemper (aka canine distemper) is caused by a virus. It can infect dogs, raccoons, skunks, foxes, and large cats such as lions and tigers. The virus infects the lungs, airways, nose, and eyes. It can also infect the brain and suppress the immune system. Distemper can cause serious illness and death in these animals.
If your dog is sleepy, you can usually rouse them with their favorite treat. Or they might get up when they hear the doorbell. In contrast, a dog that is lethargic is probably not feeling well, so it`s much harder for them to return to their normal behavior.
Immediate veterinary care is critical to try to save a fading puppy. Treatments for fading puppy syndrome include warmth, fluids, and oxygen. Antibiotics are given if there`s a bacterial infection. The puppy will be fed by hand until they are strong enough to nurse independently.
A good diet is key to preventing lethargy in dogs of all ages. The best dog food for lethargy should contain quality protein and dietary fibre to provide energy, as well as some complex-carbohydrates that provide slow-releasing energy.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. How do I get my dog to stop chewing on things? I kennel her when I leave for a few hours, but I can’t go to the mailbox without her eating something.
ANSWER : A. If she’s young, then this is just normal puppy behavior. Don’t worry about it. The thing about puppies is, they explore using their mouths. If your puppy grabs a coat hanger, or a slipper, you should roll up a newspaper, and smack yourself on the head with it for leaving those things out.. your puppy is going to explore things, that’s normal! It is 100% up to YOU to keep those things away from your puppy when your puppy is unsupervised… even for just a moment.

Remember to never scold your puppy for grabbing these things. They are just curious little cuties, and they don’t chew things up to bother us.. Dogs do not have intentional thought, so they aren’t ever doing anything ON PURPOSE to us.. The most important thing you can do when your puppy is chewing something you don’t want her to be chewing is TRADE her the inappropriate item with a toy of hers, so she understands “no honey, that isn’t what puppies chew on… THIS is what puppies chew on!” and then begin playing with her using her toy to show her that TOYS ARE FUN.. Way more fun than a boring ol’ coat hanger.

Another helpful thing you can do is have two bags of toys. In each bag is many different kinds of toys. Lots of chew toys, lots of soft squeaky toys, lots of rope-type toys, a bunch of balls.. All kinds of things! For one week you have bag#1’s toys out for your puppy to play with.. At the end of the one week, you collect those toys, and you bring out bag#2! The toys will be more interesting/feel like new to your puppy, which will in-turn, make her chew less inappropriate things. Her toys are too fun to care about that dumb Wii-mote that you left laying around.

Hope this helps!

Q. My puppy is urinating a lot. And the lady I gave one of the puppies to said she thinks her puppy has diabetes could my puppy have it to
ANSWER : A. It is not likely that either one of these puppies has diabetes. It is very uncommon for a puppy that young to have diabetes. If your puppy is straining to urinate or is urinating very small amounts frequently and cannot seem to wait for very long between urination, he may have a urinary tract infection. It is quite possible that your puppy is completely normal. I would suggest an exam with your veterinarian and discuss the behavior with them. They may suggest a urinalysis. Your puppy should be going to the vet at 3 week intervals for vaccinations at this age, so you can discuss it when he has his next set of vaccines. The other person with the other puppy should also be taking hers to a vet for proper immunizations and she should also discuss her concerns with her vet.

Q. My puppy 8 wks old, is lethaegic, sleep, wobbly, seems uncordinated
ANSWER : A. It sounds like your puppy is either very weak due to an infection or has a problem in his brain. This is a very serious emergency. Many types of infections or neurological issues can be fatal in young puppies. Bring your puppy to the vet right now.

Q. What solid food should I start 4 week old Pit Bull puppies on?
ANSWER : A. A puppy food designed for large breed puppies can help with rapidly growing bones and joints and can be given in a wet form easily to puppies learning to eat solids. You can also provide a dry kibble for them to try and should moisten it with water or some formula to make it easier for the puppies to eat and digest. As the puppies grow and their teeth come in, they will begin to eat and explore more of the solid food on their own.

Mom should also be on a Puppy formula while nursing her puppies as it will provide extra nutrients to both her and babies while they are in a very rapid stage of growth!

Q. We just adopted a Lab puppy who seems to be hungry all the time. She is usually awake by 4:30 am. Wondering on when and how much to feed her?
ANSWER : A. It depends on the food you feed her. Read the back of the bag of food, whatever it says on the back under “amount for puppy”, decrease that by a very small amount. Often kibble bags encourage overeating to sell more product.

You should be feeding the puppy at three set times throughout the day. A nice and early breakfast, lunch, and dinner. Make sure you aren’t feeding too close to bedtime. Give the puppy an hour after eating before bed in case she has to eliminate outdoors again before bed.

I’m wondering if maybe she’s just waking up at 4:30am to be taken outside to eliminate. Puppies can typically only hold their bladders 1 hour per month of age, plus 1.. and that’s typically pushing it until after 6mo of age. Have you tried just bringing the puppy outdoors, and then luring her back into her crate with a high value treat? See if she’ll go back to sleep.

Q. My 5 weeks old dog sleeps all the time, is this normal?
ANSWER : A. Young dogs and puppies will often sleep a lot during their first few months. Puppies tend to have “bursts” of energy where they will play very hard and rough for a while, eat a bunch, and then quickly go back to sleep for a long period.

However, if your puppy is not having normal periods of play, eating and bathroom breaks, there may be something more serious going on. If your puppy appears sleepy at all times, scheduling a wellness check with your local veterinarian is best.

Q. I have 8 week old mini Poodles, I wanted to start them out on grain free and to use Innova grain free Natures Table, is this okay?
ANSWER : A. If the food is formulated for puppies, then it should be find to give. There should be an AAFCO statement that states “for growth” or “for all stages of life” to indicate that it is OK to feed puppies during growth. If your puppies are currently on another food, be sure to gradually switch them over a period of about a week to prevent digestive upset. (Starting with a few days of 25new/75 old, then 50/50, then 75/new/25 old before finally all new food) If your puppies are starting on solid food, then moistening larger kibbles can help make it easier for them to eat.

Read Full Q/A … : Dog Feeding Tips

Q. How long should I feed puppy food to my puppy?
ANSWER : A. A puppy should be given puppy food from around the time that the mother begins weaning her pups until the puppy reaches about the age of one year. This is generally true for all dogs, unless your veterinarian has concerns about your puppy’s growth. Under those circumstances, your veterinarian will make alternate recommendations for your puppy’s diet. Otherwise, around one year, you may begin giving your puppy an adult formula dog food at meal times.

Read Full Q/A … : What should you feed a puppy?