How Big Will My Old English Sheepdog Get?
Old English Sheepdogs are a large breed that typically weigh 27–45 kg (60–99 lbs) at full size. Large breeds take longer to mature, typically reaching their adult weight around 14–18 months.
Old English Sheepdog Size at a Glance
Adult Weight
27–45 kg
60–99 lbs
Adult Height
53–61 cm
21–24 in
Size Category
large
Fully Grown By
14–18 mo
Old English Sheepdog Growth Chart
Old English Sheepdog Weight by Age
Predict Your Old English Sheepdog Puppy's Adult Weight
Enter your puppy's current age and weight for a personalized prediction.
Open Weight CalculatorOld English Sheepdog Growth & Development
Large breeds take longer to mature, typically reaching their adult weight around 14–18 months. They grow rapidly between 3–6 months.
A Old English Sheepdog's growth rate is fastest in the first 6 months of life. For larger breeds like the Old English Sheepdog, it's important not to over-feed during the growth phase, as rapid weight gain can put stress on developing joints and bones.
Factors that influence your Old English Sheepdog's adult size include genetics (parent size), nutrition quality, spay/neuter timing, and overall health. Males typically weigh 10–20% more than females.
Frequently Asked Questions
How big will my Old English Sheepdog puppy get?
A full-grown Old English Sheepdog typically weighs between 27–45 kg (60–99 lbs). Males tend to be on the larger end of the range while females are usually smaller.
When do Old English Sheepdogs stop growing?
Large breeds take longer to mature, typically reaching their adult weight around 14–18 months. They grow rapidly between 3–6 months. Individual dogs may reach their full size slightly earlier or later depending on genetics, diet, and overall health.
How much should a Old English Sheepdog puppy weigh at 12 weeks?
At 12 weeks, a Old English Sheepdog puppy typically weighs around 10.8–14.4 kg (24–32 lbs), which is roughly 30–40% of their adult weight.
How can I tell if my Old English Sheepdog puppy is the right weight?
Compare your puppy's weight to the growth chart above. A healthy Old English Sheepdog puppy should follow a steady growth curve. If your puppy's weight deviates significantly from the expected range, consult your veterinarian.
Learn More About Old English Sheepdogs
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