Use this Sussex Spaniel puppy weight calculator to predict how big your puppy will get. Sussex Spaniels are a sporting breed that typically reach full size by around 12-18 months.
Enter your puppy's current weight and age to predict their adult size
Estimates based on breed growth curves. Individual dogs vary with genetics and nutrition — check with your vet for a personalized read.

A practical pick for medium-sized breeds.
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| Age | Weight |
|---|---|
| Birth | 1 to 2 lbs |
| 2 Months | 5 to 9 lbs |
| 3 Months | 9 to 14 lbs |
| 4 Months | 12 to 18 lbs |
| 5 Months | 16 to 23 lbs |
| 6 Months | 19 to 27 lbs |
| 7 Months | 23 to 31 lbs |
| 9 Months | 26 to 36 lbs |
| 10 Months | 30 to 41 lbs |
| 1 Year | 33 to 44 lbs |
| 1.5 Years | 35 to 45 lbs |
| 2 Years | 35 to 45 lbs |
Estimated from typical medium-breed growth curves and the Sussex Spaniel's adult weight range. Individual puppies vary — use the calculator above for a prediction based on your puppy's actual current weight.
New breed data, growth tips, and puppy-parenting insights, plus our free printable puppy growth tracker.
Prone to hip dysplasia and intervertebral disc disease given the breed's long, low build; ear infections are also common given the floppy ears.
A quality diet in measured portions; keeping weight down helps protect the back and joints.
The flat, feathered coat needs regular brushing, with ears needing weekly cleaning.
Gentle and biddable; moderate exercise needs suit this breed's more relaxed sporting-dog temperament.
A rare English spaniel bred to hunt in dense underbrush, distinguished by a low, heavy build and golden-liver coat.
Calm and friendly, Sussex Spaniels are more laid-back than many sporting breeds, with a distinctive low, mournful bark.