At a glance

RagdollSiamese
SizeLargeMedium
Weight10–20 lb (4.5–9 kg)8–12 lb (3.5–5.5 kg)
Lifespan12–17 years12–20 years
CoatLong · Semi-long, silky, minimal undercoatShort · Short, fine, silky
OriginCalifornia, USAThailand (formerly Siam)
Typical monthly cost$80–$95 / month$75–$85 / month

Temperament & care, rated 1–5

RagdollSiamese
Energy levelNeeds a lot of activity every day 2 4
IntelligenceLearns quickly and solves problems 3 4
TrainabilityTakes to training readily 3 4
AffectionWants close contact with people 5 5
IndependenceCopes well with time alone 4 2
Good with childrenPatient and tolerant with kids 5 5
Good with other petsUsually settles with other animals 5 5
Apartment friendlyComfortable in a smaller home 5 3
Beginner friendlyForgiving for a first-time owner 5 3
SheddingSheds heavily 3 3
Grooming needsFrequent brushing or professional grooming 3 1
Noise levelVocal — barks, meows or calls often 3 3

Highlighted = the easier choice for most owners on that trait (higher, except shedding, grooming and noise, where lower is easier).

The key differences

  • Voice: Siamese are among the most vocal breeds; Ragdolls are quiet.
  • Build: Siamese are slender and athletic; Ragdolls are heavy and large.
  • Coat: Siamese are short-haired; Ragdolls semi-long-haired.
  • Activity: Siamese need more play and stimulation.

Choose the Ragdoll if…

  • You want a calm, cuddly cat that is easy to hold.
  • You prefer a quiet cat.
  • You don't mind brushing a semi-long coat.

Choose the Siamese if…

  • You want a chatty, energetic cat that "talks" to you all day.
  • You want an easy-care short coat.
  • You are home a lot — Siamese dislike being alone.

Sources

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