3 month old rottweiler weight: If you’re raising a Rottweiler puppy, the 3-month mark is one of the most exciting phases. Your pup is beginning to reveal its unique personality, becoming more social, and most noticeably—growing fast. One of the biggest questions Rottweiler owners have at this stage is: What should a 3-month-old Rottweiler weigh?
Let’s break it down with real numbers, real growth milestones, and what to expect in this critical phase of your Rottie’s journey. Learn about the size collar for an American Eskimo to ensure a perfect fit and comfort for your dog.
Average 3 Month Old Rottweiler Weight
At three months, a healthy Rottweiler puppy typically weighs between 14 to 19 kg (30 to 42 lbs). The difference depends on genetics, gender, nutrition, and activity level.
- Male Rottweilers: 16 to 19 kg (35 to 42 lbs)
- Female Rottweilers: 14 to 17 kg (30 to 37 lbs)
My own male Rottie, Thor, weighed in at 17.8 kg (39.2 lbs) at exactly 3 months. That was after following a consistent feeding routine and moderate daily walks of 20–30 minutes.
Weekly Weight Gain Breakdown at 3 Months
Between 8 to 12 weeks, your Rottweiler pup gains an average of 1.5 to 2 kg (3.3 to 4.4 lbs) per week. Here’s what the typical weekly growth might look like:
- Week 9: 13.5 kg (29.7 lbs)
- Week 10: 15 kg (33 lbs)
- Week 11: 16.2 kg (35.7 lbs)
- Week 12 (3 months): 17.5 to 19 kg (38.5 to 42 lbs)
These figures come from measured logs of growth from breeders and owners across different regions. Puppies growing significantly slower or faster may require a health check to rule out issues.
Discover why Afghan Hound collars are wide by exploring the unique characteristics of this breed and how wide collars enhance their comfort and style.
Rottweiler Puppy Weight Chart by Age
| Age | Male Weight (kg) | Female Weight (kg) |
| 8 weeks | 9–11 kg | 8–10 kg |
| 10 weeks | 12–14.5 kg | 10.5–13 kg |
| 12 weeks | 16–19 kg | 14–17 kg |
| 4 months | 20–24 kg | 18–21 kg |
| 5 months | 26–30 kg | 23–27 kg |
| 6 months | 30–35 kg | 26–31 kg |
You’ll notice that males consistently weigh 2 to 4 kg more than females at every stage. Find out what style dog collar is best for hounds to ensure comfort and safety for your furry friend.
Feeding and Calorie Needs at 3 Months
At 3 months, your Rottweiler requires 1,200 to 1,500 kcal per day, depending on size and activity. Here’s the breakdown:
- RER (Resting Energy Requirement) = 70 x (weight in kg)^0.75
- Example: For a 17 kg puppy, RER = ~670 kcal
- MER (Maintenance Energy Requirement) = RER x 2.5 to 3.0 (for growing puppies)
- So, 670 x 2.5 = 1,675 kcal/day
I fed Thor a split of:
- 500g raw meat
- 200g boiled rice/sweet potatoes
- 200g vegetables like carrots & peas
- Daily supplement of calcium and multivitamin for joint health
His weight gain remained consistent, with no visible rib outlines but a clearly tucked waistline.
Height of a 3-Month-Old Rottweiler
Height also gives clues to your pup’s growth:
- Male average: 38 to 42 cm (15 to 16.5 inches) at the withers
- Female average: 35 to 39 cm (13.8 to 15.3 inches)
Thor measured exactly 40.5 cm (15.9 inches) at 12 weeks. His paws were noticeably large, signaling that he had a lot of growing left. The ideal size collar for English Springer Spaniel typically ranges from 14 to 20 inches, depending on the dog’s age and neck size, ensuring a comfortable and secure fit.
What Affects Weight at 3 Months?
1. Genetics
Pups from larger parents will likely be heavier. Thor’s sire was 58 kg and dam 46 kg—above average for the breed—so I expected him to be on the heavier side.
2. Nutrition
Rottweiler puppies require 22–26% protein and 12–16% fat in their diet. Low-fat commercial foods can delay growth and cause poor muscle development.
3. Exercise
Too little movement slows metabolism; too much can stress growing joints. A balanced 30-minute daily walk plus playtime is ideal.
4. Worms and Health Status
Unexplained weight loss or bloating may be due to internal parasites. Deworm every 3 weeks until 12 weeks, then monthly until 6 months.
The recommended size collar for an English Cocker Spaniel usually ranges from 12 to 18 inches, providing a snug and comfortable fit for your dog.
When to Worry: Underweight or Overweight
Signs of being underweight:
- Visible ribs, hip bones
- No fat covering over the spine
- Lack of energy
A 3-month-old weighing under 13 kg (28 lbs) is likely underweight. Consult your vet if weight gain is below 1 kg per week.
Signs of being overweight:
- No waist tuck
- Heavy panting after mild play
- Fat pads near neck or hips
A pup weighing above 20 kg (44 lbs) at 3 months might be gaining too fast. Adjust portions and check for early hip strain symptoms. To find the perfect fit, learn more about what size collar for a Bichon, ensuring your dog’s comfort and safety.
Final Thoughts: Your Rottweiler’s Healthy Growth is a Balance
A healthy 3 month old rottweiler weight should be between 14 to 19 kg, active, curious, and steadily growing. Numbers matter, but so does daily observation. Thor was 17.8 kg at 3 months, strong but lean, and now at 1 year he’s 48 kg of well-trained muscle. That early growth foundation made all the difference.
If you notice odd growth spurts, too-slow gains, or behavioral changes, don’t hesitate to document it and consult your vet. These early weeks are the blueprint for the powerful, intelligent dog your Rottweiler will become.
Discover the ideal option by exploring what is the best collar material for a Bichon Frise to ensure your pet’s comfort and durability.
