Irish Wolfhound weight chart: reading the curve
Irish Wolfhounds are one of the largest dog breeds, with adult males often reaching well over 54kg and adult females over 40kg, and unlike smaller breeds they can take up to two years to finish growing rather than settling by 12 to 18 months. A weight chart for a breed this size is best used to check your own dog's curve is steady and proportionate, rather than to hit a specific number by a specific age.
Why Irish Wolfhounds grow so slowly
Giant breeds like the Irish Wolfhound grow over a much longer period than medium or small dogs, often not finishing until somewhere between 18 months and two years old. This slower timeline is normal for the breed and is one reason giant-breed puppy foods exist, formulated to support steady, controlled growth over that extended period rather than the faster growth curve of a smaller dog.
Because the breed is bred for size, adult weight varies a fair amount between individual dogs, with published breed standard figures generally citing a minimum around 54kg for adult males and 40kg for adult females, and plenty of dogs sitting above that minimum. A single average figure is less useful here than tracking your own dog's steady progress over time.
How to read a growth curve for a giant breed
Weigh your Wolfhound at consistent intervals, ideally on the same scale, and plot the trend rather than reacting to any single reading. A steady, gradual upward curve over many months is the normal pattern for this breed, and it is entirely expected that a Wolfhound will still be visibly filling out well past the age most other breeds are considered adult.
A sudden plateau, an unexpected weight loss, or a growth rate that looks nothing like your dog's own earlier pattern is worth mentioning to your vet, since these are more meaningful signals than comparing a single weigh-in against a generic average for the breed.
What this means for feeding and exercise
Because a Wolfhound puppy is carrying a huge amount of frame to build over a long period, controlled feeding on a giant-breed appropriate food matters more here than for almost any other breed, and exercise is generally kept moderate and low-impact while the joints and growth plates are still developing. Your vet is the right person to advise on both feeding amounts and safe exercise levels at each stage.
Owners sometimes underestimate just how long a Wolfhound stays a 'puppy' in growth terms, continuing to fill out well into what looks like full adult size. Judging your dog against its own earlier weigh-ins, rather than assuming growth has finished once it looks fully grown, avoids either under or over-feeding at this later stage.
Common questions
- How much should an Irish Wolfhound weigh?
- Published breed standard figures generally cite a minimum of around 54kg for adult males and 40kg for adult females, with many dogs sitting above that minimum. Individual variation is considerable in this breed, so tracking your own dog's steady progress matters more than matching a single figure.
- At what age is an Irish Wolfhound fully grown?
- Irish Wolfhounds typically take considerably longer than most breeds to finish growing, often not settling into full adult size until somewhere between 18 months and two years old. This is normal for a giant breed and should be factored into feeding and exercise decisions throughout that period.
- Why is my Irish Wolfhound puppy growing so fast?
- A rapid early growth phase is normal for a giant breed destined to reach a large adult size, but the rate should be steady rather than erratic. If growth seems unusually fast or is accompanied by lameness or discomfort, mention it to your vet, since giant breeds carry a higher risk of certain joint and growth-related issues.
- Do Irish Wolfhounds need a special puppy food?
- A giant-breed puppy formula, built to support slower and more controlled growth than a standard puppy food, is generally recommended for a breed this size. Your vet can advise on the right food and feeding amount for your individual puppy.
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Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.