Kooikerhondje Puppy Weight Calculator

Calculate the adult weight for your Kooikerhondje. Just type your puppy’s current weight and age, and see how big your puppy gets.

Kooikerhondje Breed Profile & Growth Guide

Breed Overview

The Kooikerhondje (pronounced koi-ker-hond-yuh) is a cheerful and agile small sporting breed that originated in the Netherlands. Historically used to lure ducks into traps for hunters, this breed is known for its intelligence, graceful movement, and distinctive orange-red patches with white markings.

Kooikerhondjes are affectionate with family, reserved with strangers, and highly trainable, making them excellent companions for active households. They thrive on mental and physical stimulation and enjoy tasks like obedience, agility, and scent work.

Size Category: Small to Medium
With adult weights ranging from 20 to 30 lbs, the Kooikerhondje sits between the small and medium breed categories. Monitoring growth is essential to ensure puppies develop proper bone structure, especially since their light frame makes them more vulnerable to under- or overfeeding during early stages.

For more breed information, visit the American Kennel Club’s Kooikerhondje profile.

Kooikerhondje Growth Chart & Weight Ranges

Age	Male Weight (lbs)	Female Weight (lbs)
4 weeks	2.0 – 3.0	1.8 – 2.8
8 weeks	4.0 – 6.0	3.5 – 5.5
3 months	7.0 – 10.0	6.5 – 9.0
4 months	9.0 – 13.0	8.0 – 12.0
6 months	13.0 – 18.0	12.0 – 16.0
9 months	16.0 – 23.0	14.0 – 21.0
12 months	18.0 – 26.0	16.0 – 24.0
18 months	20.0 – 30.0	18.0 – 28.0

Note: Males are typically 2–4 lbs heavier than females. Individual growth can vary depending on genetics and activity level.

How Much Bigger Will My Kooikerhondje Puppy Get?

Kooikerhondje puppies grow quickly in their early months but may continue filling out well into their second year.

• 50% of adult weight by 4 months
• 75% by 6–7 months
• Full adult size by 12–18 months

Rule of thumb:
Double your puppy’s weight at 16 weeks to estimate their adult size.

Exceptions:
Although skeletal growth usually completes by 12 months, some dogs—especially males—may continue to gain muscle mass until 18 months.

For more detailed insights, visit the Nederlandse Kooikerhondje Club of the USA.

Kooikerhondje Growth Tips

Nutrition

• Feeding Schedule: Offer 3 meals per day until 6 months old, then reduce to 2 meals daily.
• Feed a high-quality small or medium breed puppy food formulated for balanced growth and energy.
• Avoid overfeeding—maintain lean body condition to reduce strain on developing joints and avoid long-term weight issues.

Exercise

• Provide daily activity, including walks, short training sessions, and indoor or backyard play.
• Avoid high-impact exercise (e.g., excessive jumping, long runs) until your puppy’s joints are fully developed.
• Engage their minds with puzzle toys, obedience training, or light agility activities.

Health Watch

• Patellar luxation is a concern in smaller breeds—avoid slippery floors and excessive jumping early on.
• Hip dysplasia is rare but possible—maintaining a healthy weight helps minimize risk.
• Ear infections can occur due to their floppy ears—clean and dry ears regularly.