Insights
Patterns hiding in 628 breeds — size, lifespan, temperament, and how different breed groups stack up on the traits that matter.
Size distribution
Medium dogs dominate the dataset.
- toy34
- small112
- medium239
- large198
- giant45
Average lifespan, bucketed
Mean midpoint across breeds: 12.5 years.
- 8–10y20
- 10–12y151
- 12–14y400
- 14–16y56
- 16–18y1
Longest-lived breeds
- 1.Lagotto Romagnolo15–17 yrs
- 2.North American Indian Dog14–17 yrs
- 3.Havanese14–16 yrs
- 4.Belgian Malinois14–16 yrs
- 5.Papillon14–16 yrs
- 6.Chihuahua14–16 yrs
- 7.Toy Manchester Terrier14–16 yrs
- 8.American Hairless Terrier14–16 yrs
Shortest-lived breeds
- 1.English Mastiff6–10 yrs
- 2.Irish Wolfhound6–10 yrs
- 3.Neapolitan Mastiff7–9 yrs
- 4.Great Dane7–10 yrs
- 5.Bernese Mountain Dog7–10 yrs
- 6.Bulldog8–10 yrs
- 7.Saint Bernard8–10 yrs
- 8.Bullmastiff8–10 yrs
Heaviest breeds
- 1.English Mastiffup to 230 lb
- 2.Old English Mastiffup to 230 lb
- 3.American Mastiffup to 200 lb
- 4.Boerboelup to 200 lb
- 5.Tosaup to 200 lb
- 6.Irish Wolfhoundup to 190 lb
- 7.Dosa Inuup to 185 lb
- 8.Saint Bernardup to 180 lb
Tiniest breeds
- 1.Chihuahuafrom 3 lb
- 2.Prazsky Krysavikfrom 3 lb
- 3.Russian Toy (Moscow Toy Terrier)from 3 lb
- 4.Toy Fox Terrierfrom 3.5 lb
- 5.Yorkshire Terrierfrom 4 lb
- 6.Pomeranianfrom 4 lb
- 7.Japanese Chinfrom 4 lb
- 8.Biewer Terrierfrom 4 lb
Apartment-friendly picks
High apartment score, low barking, low exercise — perfect city pups.
Breed archetypes
Rule-based clusters across temperament, exercise needs and size — an intuitive first pass before you reach for k-means.
Apartment-friendly, quiet, low exercise — made for small flats and elevators.
Low energy, low prey drive — happy with a slow walk and a sunny window.
High energy, high trainability — ideal for sport, tracking or farm work.
Kid-friendly, tolerant of strangers, moderate protectiveness.
High protectiveness, reserved with strangers — property- and flock-guardians.
Novice-owner friendly, even-tempered, easy around other dogs.
Exercise needs, distribution
How many breeds sit at each level of daily exercise demand.
Origin × Breed group
Where each breed group is most represented. Darker cells mean more breeds.
| Hound | Working | Herding | Sporting | Terrier | Non-Sporting | |
|---|---|---|---|---|---|---|
| France | 35 | 4 | 7 | 14 | 7 | |
| United States | 16 | 13 | 9 | 4 | 7 | 6 |
| Germany | 7 | 13 | 2 | 14 | 3 | 5 |
| England | 6 | 3 | 2 | 13 | 16 | 2 |
| Spain | 9 | 6 | 4 | 2 | 1 | |
| Russia | 4 | 10 | 2 | |||
| Japan | 2 | 10 | 1 | 2 | ||
| Scotland | 1 | 8 | 2 | 6 | ||
| Italy | 2 | 4 | 3 | 4 | ||
| Belgium | 1 | 13 | 1 |
Trait averages per breed group
Spot which group leans into which behavior. All values on 1–5 scale.
| Group | N | Energy | Trainability | Exercise needs | Kid friendly | Shedding | Barking |
|---|---|---|---|---|---|---|---|
| Hound | 154 | 4.1 | 3.0 | 4.6 | 3.4 | 2.7 | 3.6 |
| Working | 134 | 3.6 | 3.3 | 3.8 | 3.6 | 3.3 | 2.7 |
| Herding | 96 | 4.4 | 4.1 | 4.4 | 3.9 | 3.3 | 3.1 |
| Sporting | 76 | 4.4 | 4.2 | 4.4 | 4.2 | 2.9 | 2.9 |
| Terrier | 53 | 4.0 | 3.7 | 3.7 | 3.6 | 2.0 | 3.3 |
| Non-Sporting | 45 | 3.5 | 3.7 | 3.2 | 3.8 | 2.6 | 2.8 |
| Toy | 43 | 3.0 | 3.6 | 2.3 | 3.5 | 2.1 | 3.0 |
| Guardian Dog Group | 6 | 3.2 | 2.8 | 3.8 | 3.3 | 3.5 | 3.0 |