The development of the Puppy’s age phases

The development of the Puppy

Puppies are regarded to be dogs from the time they are born until they are one year old. During the first twelve weeks of their lives, every newborn puppy passes through a number of phases of puppy development. Each puppy, on the other hand, grows in a unique way, with smaller dogs maturing quicker and some huge breeds not physically mature until they are two years old.

The pace of growth varies from breed to breed as well, and correct puppy nutrition has a lot to do with it, as previously said. Puppies need a larger proportion of protein to aid in their growth, as well as a high concentration of beneficial fats, such as omega-3 fatty acids. No matter what breed they are, all puppies are born dependent on their mother, and the proper nutrition provided by momma during pregnancy aids in the development of the puppy during its early stages of development.

NEWBORNS (The development of the Puppy)

Puppies are born blind, deaf, and toothless, and are unable to control their body temperature or even pee or defecate on their own when they are born. Heat is provided by their mother and littermates, with puppies huddling together in snug mounds to keep their body temperatures stable. When a puppy is pulled from its warm fuzzy home, he or she might soon succumb to hypothermia, which is a low body temperature. Cold, lonely pups scream out loudly to draw Mom’s attention to their plight.

It is when puppies are cleaned by their mother’s stroking tongue that they get the sense of being touched for the first time. Mom licks her young all over, not just to keep them and the nest clean, but also to encourage them to defecate and urinate more often than usual.


Puppies are able to utilize their senses of smell and touch from the moment they are born, which allows them to rummage about the nest in search of their mother’s scent-marked breasts. When a woman gives birth to a child, the first milk she makes, known as colostrum, is high in antibodies that offer passive immunity and aid in protecting the child from illness during the first few weeks of life. If you are breeding puppies, Fish4Dogs Salmon Oil is an excellent supplement to add to mom’s existing food in order to augment her diet with a high concentration of Omega 3 fatty acids, which will be passed on to the pups.

Puppies spend over 90 percent of their time sleeping during their first two weeks of existence, with the remainder of their time spent awake feeding. All of their energy is directed on growing, and their birth weight more than doubles in the first week. The front legs of newborns are incapable of supporting their weight, thus they move about with paddling motions in their front legs. The restricted movement allows the pups to get the activity they need to strengthen their muscles and improve their coordination, and before long, they are crawling over and around each other and their mother.


The puppy undergoes significant transformations throughout his second week of life. Ears and eyelids that have been sealed since birth begin to open during this phase, with ears opening around two weeks after birth and eyelids opening between ten and sixteen days after birth. This provides the fuzzy newborns with a fresh perspective on their surroundings. You can see and hear how they are learning about their mother and other dogs, and you can hear how they are growing in their own language from grunts and mews to yelps and whines. Puppies are usually able to stand by the 15th day and take their first unsteady steps by the 21st day.

Puppy development progresses from the newborn stage to the transitional period by the time it reaches three weeks of age. This is a period of fast physical and sensory growth, during which the pups go from complete reliance on their mother to a degree of independence from her. They begin to interact with their litter mates, learn about their surroundings and canine society, and begin to sample food from their mother’s dish of treats. Puppy teeth begin to emerge at five to six weeks of age and continue to erupt until all of the baby teeth are in place. Puppies are able to manage their desire to go pee by this age, and they begin to move away from their sleeping quarters to relieve themselves.

FROM WEEK EIGHT TO WEEK TWELVE (The development of the Puppy)

Puppies often go through a phase of “fear” at this era. Instead of reacting with interest when they encounter new or familiar persons or items, they respond with apprehension. Anything that scares them at this age may have a long-term effect, so be careful not to overstimulate the infant by introducing too many changes or difficulties at the same time. However, this does not necessarily signal that your pup will grow up to be a scaredy-cat; rather, it is a typical stage of growth during which puppies learn to be more careful. During this time, it is important to socialize carefully in order to avoid frightened responses.

After they have learned to eat successfully on their own, puppies may be put in new homes with their families. Although they will be better adjusted and make better companions if they are allowed to remain in the same environment and interact with their littermates and the mother dog until they are at least eight weeks old (older is typically best), It is via interaction with siblings and Mom that they learn bite restraint, how to recognize and respond appropriately to typical canine communication, and their role in canine society. This is also the age when puppies tend to make more fluid transfers from one setting to another than they would otherwise.

Your puppy has a long way to go before he is fully grown. Until he has gone through many more developmental stages and has reached the age of one to two years, he will not be regarded to be an adult.

However, even though he seems to be an adult, puppies go through a series of developmental phases that extend from birth to a year or even two before they are deemed fully grown. The most significant changes in a puppy’s development occur between the ages of six and twelve weeks. After twelve weeks, though, your fur-child will have a lot of maturing to do.

THE PERIOD OF THE JUVENILE (The development of the Puppy)

Puppies at this age are full of unbounded curiosity, irritating stubbornness, and ardent attachment for their families. Expect your puppy to get into everything, and you will not be disappointed. Now is a good time to start educating your puppy to be good.
It is customary for the juvenile puppy stage to begin at the age of ten weeks and to persist until the puppy’s puberty and the commencement of sexual maturity. It is at this stage that pups begin to understand the repercussions of their actions and to select which behaviors are most suitable in certain situations.

Most of the day is spent in play, which is not only wonderful pleasure for the infants, but also excellent preparation for life as a canine. Puppies are taught how to do vital canine behaviors such as chasing and running, pawing, biting, and fighting while they are young.

Interaction with littermates and Mom is essential for the development of social skills and canine etiquette. When puppies are bitten by each other, they learn to restrict their bite and to communicate using canine language. They learn about dominant and submissive postures via play, which helps them prepare for life in the real world.


During this stage, which may last anywhere from a few days to many weeks, puppies push their limits to see how far they can go. These dogs confront their owners to see who has the last say, seem to “forget” whatever training they have received, and behave as if they are troubled teens.

Some of this is due to the teething process. Puppies begin to lose their baby teeth at the age of three months. As the permanent teeth begin to sprout, pups may experience discomfort, leading them to chew on anything and everything to alleviate the agony.

In addition to hormones, delinquent conduct may be impacted by other factors. In contrast to many other species, the testosterone level of a male puppy between the ages of four and ten months may be up to five times greater than that of an adult dog. That way, the older canines are aware that he is a juvenile and so need “schooling” in the ways of dogs; they make certain to knock him down a peg and teach him manners before he becomes too big for his furry britches.

However, even puppies who have been spayed or neutered previous to this might have the “oh yes, MAKE ME!” mentality after this. However, even those who have done everything correctly may find themselves in this tough and stressful time. Grit your teeth, keep him on leash and under control, provide regular, patient, and compassionate training, and remind yourself, “He’s testing me, it’ll get better,” as you continue to teach. Because it will happen.

Puppy development

INTERVAL OF FOUR TO SIX MONTHS (The development of the Puppy)

Pups develop at such a rapid rate during this age that you may see changes on a daily basis. Not only may your pup test and push you, but this is also the time period during which pups learn where they stand in relation to the other pets in the group. It is anticipated that there may be some arguing and play fighting. The guideline for dogs is that older animals teach their pups boundaries, which is natural and frequently sounds more frightening than it really is.

In reality, the testosterone level of an unneutered male puppy grows at roughly 4 to 5 months of age if the dog has not been neutered. This is one manner in which adult dogs know that even large pups are still infants and that they must be taught good canine etiquette as they get older.

During this time period, puppies may also go through another fear phase, which is normal. It may persist up to a month, and in some cases, it can last longer than that, particularly in big breed dogs. This is completely normal and should not be cause for concern. It usually coincides with development spurts, and you may notice some “flaky” behavior or unnecessary hostility, as well as a tendency to become overly possessive of toys or territorial boundaries.

To avoid rewarding the anxious behavior with extra attention, make sure you understand how to communicate to pups and avoid using baby language when you do. It is preferable to ignore the fear rather than risk reinforcing it with a reward. Build the pup’s confidence via training, and he should be able to transfer out of it without any additional issues.


While the newborn may still be emotionally immature at this stage, the male puppies begin to leg-lift and mark their territory with pee at this phase. In male pups, testosterone levels rise to 5-7 times greater than those seen in adult dogs by 10 months, and then progressively decline to levels found in adult dogs by 18 months of age, when they are considered to be fully grown.

You may see more adult-pup squabbles at this stage because it serves to signal to the elder male canines that the youngster must be put in his place. Female puppies may go into heat (estrus) as early as five to six months of age, and male pups begin to show an interest in sex during this time period as well. The majority of your pup’s development in height will be completed by this time, but he may continue to fill out and acquire muscular mass as well as body weight during this time. The puppy coat begins to be replaced by the adult coat at this point.Puppies at this age seem to be bursting with boundless energy, and they will thrive when given regulated play and exercise.

A youngster’s socialization and training should be ongoing to ensure that he or she understands how to act appropriately among other dogs, other animals such as cats, and other people, including children and strangers of varying sizes, ages, and appearances.


This is the age when your dog will be physically mature, which may vary depending on the breed. Small dogs develop considerably more quickly than giant dogs, while larger dogs mature more slowly than small dogs. The amount of time your youngster has spent with other animals may also influence his or her social development. As long as your pet lives, socialization and training will continue since there will always be new things to learn, or old ones to review and practice. After all, the happiness you experience during your puppy’s first year or two foreshadows a lifetime of love to come.

If you have a puppy, you should stop feeding it puppy food after a certain amount of time.

Puppies and adult dogs need special nourishment, and this is an essential aspect of their care. The majority of dog owners are aware that pups need food that is particularly designed to support growth and development. Many dog owners, on the other hand, are unsure when it is appropriate to transition their dogs to adult dog food. This is due to the fact that there is no general guideline that applies to all dogs. Different breeds of dogs develop at different speeds. You and your veterinarian may work together to determine the optimal moment to make the adjustment to your puppy’s food.

Puppy Food Administration

In order to support their growth, development, and high levels of energy, puppies require more calories than adult canines do. When compared to adult dogs of the same size, young puppies require approximately twice the amount of calories.

With the approaching adulthood of your puppy, his growth begins to slow and his caloric requirements begin to decline as well. Even after your dog’s growth has stopped, continuing to feed him puppy food will lead to weight gain. Increased weight may easily progress into obesity, which can result in a variety of health complications.

When Should You Start Eating Adult Foods?

Up to the age of around one year, dogs are generally regarded to be pups. Breeds, on the other hand, mature at varying rates. Consider that many huge and gigantic breed dogs are considered pups until they are two or more years old and will need to continue to be fed puppy chow after they reach the age of one or two years.

A few little dog breeds, on the other hand, grow to adult size before they are even one year old! When it comes to your dog’s diet, your veterinarian is the most reliable source of information, so consult with him or her before switching to adult food.

It is best to switch to adult dog food around the time the puppy’s growth stops but before he begins to gain excessive weight when deciding on the best time to feed adult dog food. Monitor your puppy’s weight and height to see whether the statistics are increasing at a slower pace than expected.

The majority of dogs hit a growth plateau around one year of age, although you may observe a slowdown in growth as early as eight or nine months of age in certain cases.

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