Front matter
A field register of the domestic dog
The Dog Codex is a public encyclopedia of well-known breeds. Each plate covers origin, size, temperament, energy, intelligence, coat, health notes, and care — written for readers, not as veterinary advice. 30 breeds are entered in this first volume, mixed across the AKC groups.
Find a breed
Pick the traits that matter — tryhigh energy + very high intelligence— or tap any chip. Filters combine with AND.
Intelligence here means typical trainability, not a ranking of the dog.
Featured plates
Open the full index
Beagle
SmallHigh energyModerate intelligence
Border Collie
MediumVery high energyVery high intelligence
Cavalier King Charles Spaniel
SmallModerate energyHigh intelligence
French Bulldog
SmallLow energyModerate intelligence
German Shepherd Dog
LargeHigh energyVery high intelligence
Golden Retriever
LargeHigh energyVery high intelligence
Labrador Retriever
LargeHigh energyVery high intelligence
Poodle
LargeHigh energyVery high intelligence
Prefer a single list? The all-breeds index groups every entry by initial, with chips for size, energy, intelligence, and AKC group.