A Beagle is fully grown at about 18 months. At about 8 months a breeder will know if the Beagle will be below 13″. By about 18 months their skeletal will have become fully developed.
A male Beagle will grow to between 14-16 inches tall and weigh between 22 to 24 pounds. A female will grow to between 13-15 inches tall and weigh between 20-22 pounds.
Like humans dogs have milestones, and we cover that in this article.
| Age | Weight | Milestone |
| 0-2 weeks | 1lb | Standing |
| 3 weeks | 1.5-2 lbs | Open Eyes, Develop Hearing, Make Sounds |
| 4 weeks | 2.5-3lbs | Develop Socialization Skills, Barking |
| 6-7 weeks | 3.5-4lbs | Responding to Name, Off Mother’s Milk |
| 8 weeks | 3.5-6lbs | Responding to Simple Commands and Name |
| 16 weeks | 8-12lbs | Potty Trained |
| 6 months | 10-15lbs | Transition from Puppy Food to Dog Food |
| 1.5 years | 20-24lbs | Fully Grown |
0-2 Weeks
Beagle puppies at birth up until 2 weeks old will have their eyes closed. They will have no sight, which can cause them problems moving around. Their baby teeth will not have begun to grow.
Their weight will be around 1 pound. The pup will stay close to their mother and will be dependent on them for warmth and nutrition. If possible weigh the pup every day to make sure they are gaining weight.
3 Weeks Old
At this age, their eyes will begin to open and their vision will start to develop along with their hearing. The pup will not venture far from their mother, opting to stay close to feel secure, but may take a few steps as they become more alert.
They will make little or no noise. It’s a good idea to touch the Beagle to help them become used to your voice and touch.
4 Weeks Old
Things start to pick up a pace now as at 4 weeks they become vocal and start to take their first few steps. They will become more confident and will want to explore their environment.
They will begin to play with their littermates and start to develop their social skills. They will play with each other and start to play-bite their brothers and sisters. If this becomes a little too ferocious they will let out a Yelp!
6-7 Weeks Old
Sherlock Holmes could not be more curious than a Beagle at this age. They are becoming more comfortable around people and noises around the home.
They start to become a little braver, so be aware of making your home puppy proof, or you could find a few broken and chewed items lying around. They will be almost off their mother’s milk and weigh around 3.5 to 4lbs.
8 Weeks Old
An 8-week old beagle puppy weight will be around 3.5 to 6lbs and will be needing puppy food and nutrition. They will not need their mother’s milk and will need to add around 375 calories a day.
At least 60% of its daily intake will need to come from animal protein. The other 40% can be made up of a mix of vegetables, fruits, healthy fats and oils, and some starches. The Beagle puppy will also start to respond to its name and commands.
16 Weeks Old
At 16 weeks your Beagle should weigh 8 to 12lbs. House training now will have to be taken seriously, to avoid any accidents. The pup will continue to develop and be more receptive to training.
They will start to gain control over their bowels and bladders. A certain level of trust and bond will start to develop with your Beagle. Although don’t force him to interact if he feels uncomfortable. He is beginning to become a young adult but in their minds, they are still puppies.
6 Month Old
It’s at 6 month’s old your pup’s growth will slow down. They can move away from puppy food to dog food. by switching there is less chance of your Beagle becoming overweight, as puppy food is full of calories.
Their weight now should be around 10-15lbs. They should now be eating 3 meals a day. Don’t forget to give them fresh water at every meal. 20-30 minute training sessions a day will be good for your dog. With lots of praise, they will start to enjoy the sessions, and you’ll both benefit.
18 Months Old
At about 20-24lbs and 18 months old your Beagle has become an adult. They are now sexually and emotionally mature and physically grown. They have become responsive to training, and other dogs will respond to them as a fellow adult.
As they are now more independent you will find you are not the most important thing in their world. Long walks of around 1 mile will help with cardio exercise and use up their excess energy.
At What Age Do Beagles Stop Growing?
The Beagle is now fully grown at 18 months and will weigh about 20-24lbs. Their skeletal system is fully developed and stable.
If your Beagle is slightly over or under these markers, then there is nothing to worry about. If you are concerned that your dog has not reached these markers then a visit to a vet would be reassuring.
Beagle Age Equivalency Chart
The chart below shows the Beagles age equivalency to human years and is based on size and weight.
Helping your Beagle’s Growth
With a healthy diet and exercise your Beagle will grow into a healthy pet and using our guide you can be sure your dog will become a healthy and contented animal.
By tracking your Beagle’s milestones you can be sure that they are developing correctly. Just like we try and live a healthy lifestyle this also applies to your growing Beagle.
Starting with a healthy diet your Beagle will need fewer visits to the vet and less expense. I’ve always tried to eat a good healthy balanced diet, with fruit and vegetables being a large part of that diet, and my Bella is no different.
As a puppy, I knew it was important to take care of her diet, and she has grown into a healthy loving pet.
Vaccinations to increase your Beagle’s lifespan
To increase your Beagle’s lifespan it’s important that they are vaccinated. protecting against heartworms, rabies, ticks, and fleas is vital for a healthy Beagle.
Your Beagle will need vaccinations early on to protect them from killer diseases such as distemper and parvovirus.
To keep everything in check, make sure that you visit the vet each year for their booster shots and checkups.
To help with the welfare of your Beagle set up a care plan with your veterinarian. They can help create a plan for you and give any nutritional and care advice.
How long do Beagles live?
I’m often asked how old is Bella, and that can be a difficult question as she gets older. Beagles will live between 12-15 years. This is average for a dog of this size.
Luckily Bella has had very little problems with her health, and medications are improving all the time. So with care and attention, your Beagle can reach a similar age.
The good point is that the average lifespan of a Beagle has increased over the past 25 years In 1994 a Beagles lifespan averaged 11-12 years.
This is probably down to a better understanding of the importance of a healthy diet and lifestyle.
Compared to other breeds a Beagle has a slightly longer lifespan. This is due to them being a pretty healthy breed.
Be aware of people trying to sell you a ‘Pocket Beagle’. These are not true Beagles and are a much smaller version of a regular Beagle. They are more likely to have health issues.
Oldest recorded Beagle
The Guinness Book of World Records recorded a Beagle named Butch who lived for an amazing 27 years from 1975-2003. Butch lived in Virginia, USA.
Sarah is the Senior Editor at Beagle Owner. An avid reader of crime novels, fashion lover, and walking her Beagle Woody.
