Manx Weight Chart

How big do Manxs get? See their growth chart and ideal weight.

Adult Weight Range
25-40 lbs
Size: Medium

Manx Growth Chart

8 weeks
4.9 lbs
15%
3 months
8.1 lbs
25%
6 months
16.3 lbs
50%
9 months
24.4 lbs
75%
12 months
29.3 lbs
90%
18 months
32.5 lbs
100%

Is My Manx a Healthy Weight?

A healthy Manx should have a visible waist when viewed from above, and you should be able to feel (but not see) their ribs.

  • Ideal: Ribs easily felt, visible waist, tucked abdomen
  • !Overweight: Ribs hard to feel, no waist visible, rounded belly
  • Underweight: Ribs, spine visible, prominent waist

Frequently Asked Questions

How big does a Manx get?

A healthy adult Manx typically weighs between 25-40 lbs. They are considered a Medium breed.

When does a Manx stop growing?

Most Manxs reach their full adult height and weight by 18 months. However, they may continue to "fill out" with muscle for a few months after.

How much should a Manx puppy weigh at 3 months?

At 3 months old, a typical Manx puppy weighs approximately 8.1 lbs. Growth rates vary, so consult your vet if concerned.

How can I tell if my Manx is overweight?

A healthy Manx should have a visible waist when viewed from above, and you should be able to feel (but not see) their ribs through a thin layer of fat. If the waist isn't visible, ribs are hard to feel, or the belly sags, your Manx may be overweight. Consult your vet for an accurate body condition assessment.