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Kerry Blue Terrier vs Rat Terrier

Side-by-side comparison across all 14 AKC trait ratings, with a clear verdict on which breed fits which kind of household.

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The bottom line

Kerry Blue Terrier vs Rat Terrier

People compare Kerry Blue Terriers and Rat Terriers because both are energetic, clever terriers with a nose for trouble and a soft spot for their people. But that’s where the similarities end. If the Kerry Blue is a moody poet with a day job in security, the Rat Terrier is your upbeat, overachieving best friend who aced every class and still remembers your birthday. The Kerry Blue is bigger, nearly twice the size of a Rat Terrier, and built for work. originally herding and guarding on Irish farms. He’s deeply affectionate with his family, but he’s also intense. He needs structure, early training, and a job to do. Without it, that 4/5 energy turns into obsessive barking and destructive digging. He’s nearly non-shedding, great for allergies, but his coat demands grooming every few weeks. And while he loves older kids, his terrier drive means he might not distinguish between a pet rodent and a toy mouse. The Rat Terrier, meanwhile, is the more approachable of the two. At 10 to 25 pounds, he fits better in apartments and is easier to manage for first-time owners. He’s eager to please. trainability 5/5 isn’t just a number, it means he’ll learn “stay” faster than you can finish the treat bag. He’s adaptable, loves kids of all ages, and barks less. But don’t mistake that for lazy. He still needs daily mental and physical work, or he’ll turn your house into a dig site. Here’s the real difference: The Kerry Blue bonds deeply but on his terms. The Rat Terrier just wants to be part of whatever you’re doing, full stop. Pick the Kerry Blue if you’ve got terrier experience and want a loyal, dramatic, hypoallergenic partner in crime. Choose the Rat Terrier if you want a joyful, trainable sidekick who thrives on routine and affection.

Kerry Blue Terrier
Rat Terrier
17.5–19.5 in
Height
10–18 in
33–40 lb
Weight
10–25 lb
12–15 yr
Lifespan
12–18 yr
$1.5–3.5k
Puppy price
$0.8–2.5k
#129
AKC popularity
#86

Trait-by-trait

Higher bar = more of that trait. Shedding, barking, drooling, grooming flipped for readability.
Affectionate w/ Family
Good with Young Children
Good with Other Dogs
Shedding Level
Coat Grooming
Drooling Level
Good with Strangers
Playfulness
Watchdog / Protective
Adaptability
Trainability
Energy Level
Barking Level
Mental Stimulation Needs
AffectionGood w/ KidsGood w/ DogsShedding LevelGroomingDrooling LevelGood w/ StrangersPlayfulnessProtectiveAdaptabilityTrainabilityEnergy LevelBarking LevelMental Stim.
Kerry Blue Terrier Rat Terrier
Overlay

Where they diverge

Shedding Level
Kerry Blue Terrier sheds less (2-point difference)
Kerry
Good with Strangers
Rat Terrier is friendlier with strangers (2-point difference)
Rat
Playfulness
Rat Terrier is more playful (2-point difference)
Rat
Trainability
Rat Terrier is easier to train (2-point difference)
Rat
Good with Young Children
Rat Terrier is better with kids (1-point difference)
Rat
The verdict

Choose the Kerry Blue Terrier if…

  • Experienced terrier owners
  • Active families
  • Allergy sufferers
  • You value coat groomingKerry Blue Terrier scores noticeably higher.

Choose the Rat Terrier if…

  • Active families
  • First-time dog owners
  • Apartment or small home living
  • You value shedding levelRat Terrier scores higher here.
Kerry Blue Terrier Owner’s Guide
Everything you need before bringing your Kerry Blue Terrier home.
Breed variants, breeder red flags, and what to ask
First-week checklist and daily schedules by age
Training timeline from 8 weeks to adulthood
Health screenings, emergency card, and feeding portions
Grooming schedule, first-year costs, and what nobody tells you
Get Your Guide
Rat Terrier Owner’s Guide
Everything you need before bringing your Rat Terrier home.
Breed variants, breeder red flags, and what to ask
First-week checklist and daily schedules by age
Training timeline from 8 weeks to adulthood
Health screenings, emergency card, and feeding portions
Grooming schedule, first-year costs, and what nobody tells you
Get Your Guide

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