How big does a Sealyham Terrier get? Adult weight is 23-24 lbs, and growing usually finishes around 11 months. The curve shows the weight to expect along the way.

Age	Expected weight
2 months	6.2-6.5 lbs
3 months	10.5-11 lbs
4 months	14-14.6 lbs
5 months	16.9-17.6 lbs
6 months	19.8-20.6 lbs
8 months	21.5-22.4 lbs
10 months	22.6-23.6 lbs
12 months	23-24 lbs

Typical range for a healthy puppy. Individual dogs can sit above or below it.

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Sealyham Terrier Photos

Sealyham Terrier - Frequently Asked Questions

How big is a Sealyham Terrier? +

The Sealyham Terrier is a small breed, standing 10 in tall and weighing 23-24 lbs.

How much does a Sealyham Terrier weigh at 6 months? +

A Sealyham Terrier usually weighs 19.8-20.6 lbs at 6 months and reaches 23-24 lbs once fully grown, at around 11 months.

How long do Sealyham Terriers live? +

The average lifespan of a Sealyham Terrier is 12-14 yrs.

How much does a Sealyham Terrier cost? +

Expect to pay $1,500-$3,000 for a Sealyham Terrier puppy, plus around $1,000-$1,600 per year for food, vet care, grooming, and supplies.

Is a Sealyham Terrier hypoallergenic? +

Yes - the Sealyham Terrier is considered hypoallergenic and sheds very little, making it a good choice for people with mild dog allergies.

Is a Sealyham Terrier good with kids? +

Yes - Sealyham Terriers are known for being gentle and patient with children, making them a solid family choice.

Is a Sealyham Terrier good for apartments? +

Yes - the Sealyham Terrier adapts well to apartment living thanks to its moderate energy and size.

Is a Sealyham Terrier easy to train? +

The Sealyham Terrier is moderately trainable. Consistent, patient training from an early age works best.

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