Sitting proudly as America’s 14th favorite breed, the Cavalier King Charles Spaniel’s ideal size is often highlighted as a key factor in their widespread love.
Join me in this article as we explore the dimensions that define this breed, including a detailed monthly growth chart to give you a comprehensive understanding of their development.
How Big is a Cavalier King Charles Spaniel?
As the largest breed in the Toy category, Cavalier King Charles Spaniels typically stand from 12 to 13 inches at the shoulder and weigh 13 to 18 pounds as an adult dog.
At 12 weeks old, Bentley weighed 4 pounds and stood with all fours on my outstretched palm! Puppy or adult – Cavalier King Charles Spaniels are a perfect size!
Cavalier King Charles Spaniel Size Chart
You may monitor your Cavalier’s development using the age-specific size chart below.
| Pup’s Age | Weight (lbs) | Height (in) |
| 1 month | 1.5 – 2.5 lbs | 1.5 – 1.7 in |
| 2 months | 4.0 – 5.2 lbs | 4.0 – 5.0 in |
| 3 months | 5.7 – 7.9 lbs | 7.5 – 8.0 in |
| 4 months | 7.5 – 10.1 lbs | 7.8 – 9.5 in |
| 5 months | 9.2 – 12.5 lbs | 9.4 – 10.2 in |
| 6 months | 10.3 – 14.1 lbs | 10 – 11 in |
| 7 months | 11.4 – 15.6 lbs | 11 – 12 in |
| 8 months | 12.0 – 16.5 lbs | 11.5 – 12.2 in |
| 9 months | 12.3 – 17 lbs | 11.8 – 12.5 in |
| 10 months | 12.6 – 17.3 lbs | 12 – 12.8 in |
| 11 months | 12.8 – 17.7 lbs | 12 – 13 in |
| 12 months | 13.0 – 18 lbs | 12 – 13 in |
They are the perfect size to curl up on your lap.
King Charles Cavalier is small enough that their tails won’t brush glasses of red wine off the coffee table onto your carpet!
Most of the time, their noses can just barely reach up to the table height, so your canapés are usually safe from being snatched by your pet!
Moreover, their compact size also makes travel with a Cavalier King Charles Spaniel more feasible, whether it’s car trips or even air travel. They are well-suited for being lap dogs and enjoy being close to their owners, which is easier due to their manageable size.
They are light enough to carry comfortably to the vet’s office or through an airport.
Cavalier King Charles Spaniels are easy to pick up – whether you need to quickly get them out of reach of other dogs in the neighborhood or just give them a kiss and a snuggle.
Cavalier King Charles Spaniel puppies in the early stages of their training can be known to jump up on people and pull at their leashes. But at their diminutive size, you don’t have to worry about them knocking anyone over or pulling you anywhere you don’t want to go.
Your Cavalier’s crate or dog bed won’t take up too much space in the house.
Crafty pet owners have been known to house their Cavalier King Charles Spaniels beneath lamp tables, under the stairs, or just about any cozy spot.
Cavalier King Charles Spaniels are the perfect size to take a bath in the kitchen sink. A few squirts with the spray hose, and they’re good as new!
Ultimately, the size of a Cavalier King Charles Spaniel makes them a versatile and affectionate companion, ideal for a wide range of households and lifestyles. Their stature combines the best of both worlds: small enough for comfort and convenience, yet big enough to be an active and engaging pet.