Beagle puppies are known for their playful nature and boundless energy, making them a popular choice for families. It’s rewarding to watch them grow from little balls of joy to energetic, inquisitive dogs. Their personalities change as they get older and start to exhibit their distinctive qualities.
In terms of size and behavior, beagle puppies undergo numerous changes from the first month until their first birthday. It’s amazing to watch them grow, and every phase offers something fresh and interesting. It can be ensured that they develop into content, healthy adult dogs by being aware of their development.
This post will discuss the monthly changes that beagle puppies go through, from appearance to behavior, and it will include some cute pictures that show these changes.
Characteristics of beagles
These adorable pets are avid hunters. Beagle hounds are able to track the path taken by hares, which are small predators. In an emergency or unclear situation, the dog quickly navigates and responds quickly to any changes in the environment. The quintessential beagle traits are resourcefulness and extraordinary intelligence. This is a brave and determined animal, despite its small stature.
When it comes to people, beagles are incredibly amiable. They enjoy playing with other pets and their fellows. An active lifestyle is necessary for a natural hunter, including long walks, running, outdoor games, playground activities, and catch-up. A beagle’s temperament is calm and well-balanced, regardless of age. This pet is neither cowardly nor aggressive.
The animal’s outward characteristics:
- The head is massive, without folds and wrinkles. The nose is black, with large nostrils. The eyes are round, not bulging with a "touching", pleading expression. Their color depends on the coat color: from almost dark to light brown. The ears are soft, close to the cheeks. The jaws are powerful, forming a scissor bite. There are 42 sharp teeth in the mouth. The neck is long (to run and at the same time keep track of prey), with a slight bend.
- The paws of beagles are not long, with short pasterns and small claws. The hind legs are powerful, with well-developed thigh muscles.
- The back line is even, the spine is straight. Despite the small length, the dog"s lower back has the correct balance. The chest is slightly below the elbows. The tail has a strong base, mobile, but does not bend and does not fall on the back.
- In the photo of the beagle, short and very thick hair is noticeable, which, due to the features of the guard hairs, makes the dog "waterproof". To the touch, the hairs resemble thin wire. Beagle colors characteristic of a hound: according to breed standards, only brown (liver) is not allowed.
An adult’s withered height is between 35 and 40 cm.
Development by months
The weight of a newborn is 250–350 g. Boys are already a little bit bigger than girls at this point. Throughout the puppies’ continued development, this distinction persists.
1 month
Small beagles consume their mother’s milk during the first month of life, but by the fourth week, the owner has already started to offer them softened liquid complementary food. As soon as the dog reaches this age, you must start keeping an eye on its diet and teach it to follow a rigid eating schedule devoid of begs and snacks.
A puppy that is one month old can only be 20 cm long. Depending on the gender, it weighs between 1.5 and 3 kg. On the milk of a healthy mother who is ready to have children, babies grow five to six times larger at birth.

2 months
The puppy is weaned up to five times a day and gradually transitioned to independent feeding. After learning to see, hear, and run, the baby becomes extremely active and needs a lot of energy to explore its surroundings.
A dog that is two months old can grow up to be 25 cm tall. The puppies in the litter range in weight from 3 to 5 kg.

3 months
When a puppy finds new owners, it is potty trained, can eat on its own, and is aware of basic etiquette. The beagle’s new owner progressively switches its diet. For members of the breed, specialized complex feeds are a popular choice.
The dog’s withers measure 23–25 cm. It gains 5–6 kg in weight.

4 months
The puppy continues to eat five times a day; it grows larger and is more energetic. Food must be given on time for optimal development. A beagle’s height at 4 months is between 30 and 33 cm. It weighs about 7 or 8 kg.

5 months
The beagle is an adult dog now, not a puppy. Its growth slows down at this point; although the weight continues to increase rapidly, the height only slightly increases (by 1-2 cm). The dog weighs between 8 and 10 kg.

6 months
A dog that is six months old is progressively moved to three meals per day. A teenage beagle’s development slows down at this point; their height and weight increase to 33–35 cm and 12 kg, respectively. Some individuals develop rapidly: at 6 months they can already reach 40 cm at the withers. Typically, this is the upper limit—beagles don’t grow past this point.
7-9 months
The dog gains two to three kilograms of weight and a few centimeters of height (up to 36 to 38 cm) at the withers in just three months. There are only two meals a day, depending on the feeding schedule.
The beagle progressively matures into adulthood; it does not require frequent feeding because dogs are oblivious to the dangers of eating too much, which can lead to obesity. This is particularly risky for young dogs because being overweight makes it harder for them to run and play, which is vital for dogs. The dog’s health is impacted by inactivity.

10-12 months
Typically, a beagle’s growth and development slow down during their first year of life. A one-year-old dog is a full-fledged adult animal. At its withers, it is 38–40 cm tall and weighs 13–18 kg on average.

The standard parameters for both sexes of beagle puppies are displayed in the table.
| Age (months) | Height (cm) at withers | Weight (kg) | ||
| Females | Males | Females | Males | |
| 1 | 18 | 20 | 1.5 | 3 |
| 2 | 23 | 25 | 2-4 | 3-4 |
| 3 | 28 | 30 | 5 | 6 |
| 4 | 30 | 32 | 7 | 8 |
| 5 | 32 | 34 | 8 | 10 |
| 6 | 33 | 35 | 9 | 12 |
| 7 | 34 | 36 | 10 | 13 |
| 8 | 35 | 37 | 10.5 | 14 |
| 9 | 35.5 | 37.5 | 10.7 | 15 |
| 10 | 36 | 38 | 11 | 16 |
| 11 | 37 | 39 | 12 | 17 |
| 12 | 38 | 40 | 13 | 18 |
Deviation from the norm on an individual basis is not pathological. The puppy’s healthy appetite, level of physical activity, and lack of illness symptoms are what matter most.
| Age (Months) | Description |
| 1 Month | Beagle puppies are tiny, around 2-3 lbs, with closed eyes, and still depend on their mother for feeding. |
| 2 Months | They start exploring more, become playful, and their ears begin to droop. |
| 3 Months | At this age, they are more active, teething, and can weigh around 8-10 lbs. |
| 4 Months | Beagle puppies have a lot of energy, their ears are fully dropped, and their coat is becoming more defined. |
| 5 Months | They start losing their puppy teeth, and their weight increases to 12-15 lbs. |
| 6 Months | Their growth slows a bit, but they’re more independent and curious about their surroundings. |
| 7 Months | They are closer to their adult size, weighing around 15-20 lbs, and continue to gain muscle. |
| 8 Months | Beagle puppies are nearly full-grown, with a sturdy build and more confidence. |
| 9 Months | They’re mostly done growing in height but will continue filling out. |
| 10 Months | Behavior becomes more settled, though they’re still playful and energetic. |
| 11 Months | They resemble adult beagles, with a smooth coat and strong physique. |
| 12 Months | By this age, they are fully grown, usually weighing between 20-25 lbs, and have an adult temperament. |
A beagle puppy’s development is remarkable, lasting from the first month to the twelfth. They begin as small, inquisitive puppies and develop fast into playful, lively dogs with individual personalities.
In the course of their first year, beagles undergo social and physical development. They gain self-assurance, learn how to communicate with people and other animals, and begin to behave more like adults. Observing them learn and discover the world is a delightful experience.
Savor every phase of your beagle puppy’s development if you are raising one. They grow into happy, healthy adult dogs quickly, but every moment is exciting and full of joy.
Adorable, gregarious, inquisitive, and rapidly growing during their first year of life, beagle puppies undergo noticeable behavioral and physical changes. Every stage of their development, from their tiny, floppy-eared newborn appearance to their sturdy, playful self at 12 months, is full of exciting milestones. Pictures of beagle puppies taken between one and twelve months of age show how they change into more self-reliant, gregarious, and energetic dogs, which makes them a great companion for both individuals and families.









