What does each club give for Peso in the Boston Terrier?

FCI, Peso: under 11.4 kg; AKC, Peso: under 11.3 kg; UKC, Peso: under 11.3 kg; KC, Peso: under 11.5 kg; CKC, Peso: under 11.3 kg.

Boston Terrier breed standards compared

Each column is one club's published standard. An empty cell means the club says nothing on that point in our records.

Clubs compared: FCI, AKC, UKC, KC, CKC.

Size

Size
Measure	FCI	AKC	UKC	KC	CKC
Peso	under 11.4 kg	under 11.3 kg	under 11.3 kg	under 11.5 kg	under 11.3 kg
Relación altura-longitud	No ruling	No ruling	No ruling	1	No ruling
Relación cráneo-hocico	over 3	over 3	over 3	over 3	over 3

Conformation

Conformation
Form	FCI	AKC	UKC	KC	CKC
MordidaMordida en pinza	Estándar (“The bite is even or sufficiently undershot to square the muzzle”)	Estándar (“The bite is even or sufficiently undershot to square the muzzle”)	Estándar (“meet in an even bite or one sufficiently undershot”)	Estándar (“bite even, or sufficiently undershot to square muzzle”)	Estándar (“Bite even or sufficiently undershot to square muzzle”)
MordidaPrognatismo inferior	Alternativo (“even or sufficiently undershot to square the muzzle”)	Alternativo (“even or sufficiently undershot to square the muzzle”)	Alternativo (“or one sufficiently undershot to square the muzzle”)	Alternativo (“or sufficiently undershot to square muzzle”)	Alternativo (“or sufficiently undershot to square muzzle”)
MordidaBoca torcida	Falta (“SEVERE FAULTS: Wry mouth”)	Falta (“Serious Fault - Wry mouth”)	Falta (“Serious Faults: Wry jaw”)	No ruling	No ruling
DenticiónDentición completa	No ruling	No ruling	Estándar (“A full complement of strong, white, regular teeth”)	No ruling	No ruling
Porte de las orejasErguidas (tiesas)	Estándar (“Small, carried erect, either natural or cropped”)	Estándar (“The ears are small, carried erect”)	Estándar (“They are carried erectly”)	Estándar (“carried erect and upright when alert”)	Estándar (“Carried erect, either cropped ..., or natural bat”)
Forma de los ojosRedondos	Estándar (“Wide apart, large, round and dark in colour”)	Estándar (“wide apart, large and round and dark in color”)	Estándar (“The large, round eyes are dark in color”)	Estándar (“Set wide apart, relatively large, round, dark in colour”)	Estándar (“Wide apart, large and round, dark in colour”)
Inserción de los ojosSeparados	Estándar (“Wide apart, large, round and dark in colour”)	Estándar (“The eyes are wide apart, large and round”)	Estándar (“dark in color and wide apart”)	Estándar (“Set wide apart, relatively large, round”)	Estándar (“Wide apart, large and round”)
Inserción de los ojosProminentes	No ruling	No ruling	No ruling	Falta (“Excessively prominent eyes highly undesirable”)	Falta (“Eyes small or sunken; too prominent”)
Longitud del hocicoCorto	Estándar (“Muzzle: Short, square, wide and deep”)	Estándar (“The muzzle is short, square, wide and deep”)	Estándar (“The muzzle is short, wide and deep”)	Estándar (“Muzzle relatively short, square, wide, and deep”)	Estándar (“Muzzle: Short, square, wide and deep”)
Forma del hocicoCuadrado	Estándar (“Muzzle: Short, square, wide and deep”)	Estándar (“The muzzle is short, square, wide and deep”)	No ruling	Estándar (“Muzzle relatively short, square, wide, and deep”)	Estándar (“Muzzle: Short, square, wide and deep”)
Línea superiorHorizontal	Estándar (“Top line: Level”)	Estándar (“The topline is level”)	Estándar (“The topline is level”)	Estándar (“Level topline with croup that curves slightly”)	No ruling
Línea superiorDe carpa (arqueada)	No ruling	Falta (“Serious Body Faults - Roach back, sway back, slab-sided”)	Falta (“Serious Faults: Roach back. Sway back. Slab-sided”)	No ruling	Falta (“Faults: ... roach back; sway back”)
Línea superiorEnsillada	No ruling	Falta (“Serious Body Faults - Roach back, sway back, slab-sided”)	Falta (“Serious Faults: Roach back. Sway back. Slab-sided”)	No ruling	Falta (“Faults: ... roach back; sway back”)
Inserción de la colaBaja	Estándar (“TAIL: Set-on low, short, fine and tapering”)	Estándar (“The tail is set on low, short, fine and tapering”)	Estándar (“is set on low and must not be carried above the horizontal”)	Estándar (“Set on low; short, fine, tapering”)	Estándar (“Set-on low; short, fine and tapering”)
Longitud de la colaCorta	Estándar (“Set-on low, short, fine and tapering”)	Estándar (“set on low, short, fine and tapering”)	Estándar (“The short, fine, tapering tail”)	Estándar (“Set on low; short, fine, tapering”)	Estándar (“Set-on low; short, fine and tapering”)
Longitud de la colaSin cola	No ruling	No ruling	Descalificante (“Disqualifications: Docked tail; no tail”)	No ruling	No ruling
Porte de la colaLevantada (alegre)	Falta (“Gaily carried tail”)	Falta (“Body Faults - Gaily carried tail”)	Falta (“Fault: Gaily carried tail”)	Falta (“never carried above horizontal”)	Falta (“Faults: A long or gaily carried tail”)
PechoProfundo	Estándar (“Chest: Deep with good width”)	Estándar (“The chest is deep with good width”)	Estándar (“The chest is deep, with good width”)	Estándar (“The chest is deep, well filled, and with good width”)	Estándar (“Deep with good width of chest”)
PiesPie de gato	Estándar (“Forefeet: Small, round and compact”)	Estándar (“The feet are small, round and compact”)	Estándar (“forefeet are small, round and compact”)	Estándar (“Round, small, compact, turning neither in nor out”)	Estándar (“Feet: Round, small, and compact”)
PiesAbiertos	Falta (“Splay feet”)	Falta (“Faults - Legs lacking in substance; splay feet”)	No ruling	No ruling	Falta (“Faults: ... splay feet”)
CorvejonesBien descendidos	No ruling	No ruling	Estándar (“The hocks are well let down”)	Estándar (“hocks well let down”)	No ruling

Markings

Markings
Marking	FCI	AKC	UKC	KC	CKC
Lucero corrido	Estándar (“Required markings: White muzzle band, white blaze between the”)	Estándar (“white blaze between the eyes”)	Estándar (“a white blaze between the eyes”)	Estándar (“white muzzle connected to an even white blaze between the eyes”)	No ruling
Collar	No ruling	Estándar (“white collar, white forechest”)	Estándar (“a white collar and white on part or whole of the forelegs”)	Estándar (“white collar, breast”)	No ruling
Mancha en el pecho	No ruling	Estándar (“white collar, white forechest”)	No ruling	Estándar (“white collar, breast”)	No ruling
Calzado bajo	No ruling	Estándar (“white on part or whole of forelegs and hind legs below the hocks”)	Estándar (“white on part or whole of the forelegs and hind legs below the hocks”)	Estándar (“part or whole of forelegs, and hindlegs below hocks”)	No ruling

Cropping, docking and other procedures

Cropping, docking and other procedures
Procedure	FCI	AKC	UKC	KC	CKC
Corte de orejas	Alternativo (“carried erect, either natural or cropped”)	Alternativo (“either natural or cropped to conform to the shape of the head”)	Alternativo (“may be left natural or cropped to conform to the shape”)	No ruling	Alternativo (“either cropped to conform the shape of the head, or natural bat”)
Caudectomía (corte de cola)	Descalificante (“Docked tail”)	Descalificante (“Disqualify - Docked tail”)	Descalificante (“Disqualifications: Docked tail; no tail”)	No ruling	Descalificante (“Docked tail”)
Extirpación de los espolones	Alternativo (“The dewclaws may be removed”)	Alternativo (“The dewclaws may be removed”)	Alternativo (“Dewclaws may be removed from the forelegs”)	No ruling	No ruling

The law on these procedures differs by country. A listing here says nothing about whether one is legal where you live.

Boston Terrier colors and patterns

What each club's breed standard says about every Boston Terrier color and pattern. Point at a ruling to see the club's own wording.

Breed standards describe the Boston Terrier in Negro, Blanco, Seal y Caoba. Standard patterns: Bicolor, Atigrado y Atigrado inverso.

Pelaje: rulings by club
Color or pattern	FCI	AKC	UKC	KC	KUSA
Negro	Estándar (“black with white markings”)	Estándar (“Black & White”)	Estándar (“Black, with white markings”)	Estándar (“black or seal with white markings acceptable”)	Estándar (“black with white markings”)
Blanco	Estándar (“white markings”)	Estándar (“white markings”)	Estándar (“white markings”)	Estándar (“white markings”)	Estándar (“white markings”)
Seal	Estándar (“seal”)	Estándar (“Seal & White”)	Estándar (“Seal”)	Estándar (“black or seal with white markings acceptable”)	Estándar (“seal”)
Caoba	Estándar (“Brindle”)	Estándar (“Brindle & White”)	Estándar (“Brindle”)	Estándar (“Mahogany Brindle & White”)	Estándar (“Brindle”)
Albino	No reconocido	Descalificante	Descalificante (“albinism”)	No reconocido	No reconocido
Azul	Descalificante (“Grey or liver colours”)	Descalificante	Descalificante (“gray or liver colors”)	No reconocido (“Blue & White”)	Descalificante (“Grey or liver colours”)
Lila	No reconocido	Descalificante	No ruling	No reconocido	No reconocido
Chocolate	No reconocido	Descalificante	No ruling	No reconocido	No reconocido
Hígado	Descalificante (“Grey or liver colours”)	Descalificante	Descalificante (“gray or liver colors”)	No reconocido (“Red & White”)	Descalificante (“Grey or liver colours”)
Rojo	No reconocido	Descalificante	No ruling	No reconocido	No reconocido
Patterns
Bicolor	Estándar (“Brindle, seal or black with white markings”)	Estándar (“Brindle, seal, or black with white markings”)	Estándar (“Brindle, Seal, or Black, with white markings”)	Estándar (“with white markings”)	Estándar (“Brindle, seal or black with white markings”)
Atigrado	Estándar (“Brindle is preferred”)	Estándar (“Brindle & White”)	Estándar (“Brindle is preferred”)	Estándar (“Brindle: being a mixture of any shade of brown and black”)	Estándar (“Brindle is preferred”)
Atigrado inverso	Estándar (“Brindle is preferred”)	Estándar (“Brindle & White”)	Estándar (“Brindle is preferred”)	Estándar (“Brindle: being a mixture of any shade of brown and black”)	Estándar (“Brindle is preferred”)
Unicolor	Descalificante (“Solid black, solid brindle, or solid seal without required white markings”)	Descalificante (“Solid black, solid brindle or solid seal without required white markings”)	Descalificante (“Solid seal, black or brindle without the required white markings”)	No reconocido	Descalificante (“Solid black, solid brindle, or solid seal without required white markings”)
Merle	No ruling	No ruling	No ruling	No reconocido	No ruling
Doble merle	No ruling	No ruling	No ruling	No reconocido	No ruling

Ojos: rulings by club
Color or pattern	FCI	AKC	UKC	KC	KUSA
Marrón oscuro	Estándar (“dark in colour”)	Estándar (“dark in color”)	Estándar (“dark in color”)	Estándar (“dark in colour”)	Estándar (“dark in colour”)
Azul	Descalificante (“Eyes blue in colour or any trace of blue”)	Descalificante (“Eyes blue in color or any trace of blue”)	Descalificante (“Any trace of blue in eyes”)	No ruling	Descalificante (“Eyes blue in colour or any trace of blue”)
Patterns
Heterocromía sectorial	Descalificante (“any trace of blue”)	Descalificante (“any trace of blue”)	Descalificante (“Any trace of blue in eyes”)	No ruling	Descalificante (“any trace of blue”)

Nariz: rulings by club
Color or pattern	FCI	AKC	UKC	KC	KUSA
Negro	Estándar (“Black and wide”)	Estándar (“black and wide”)	Estándar (“black and wide”)	Estándar (“nose black”)	Estándar (“Black and wide”)
Nariz Dudley	Descalificante (“Dudley nose”)	Descalificante (“Dudley nose”)	Descalificante (“Dudley nose”)	No ruling	Descalificante (“Dudley nose”)

What the rulings mean

Estándar: Described by the club's breed standard.
Descalificante: The club's breed standard disqualifies an animal of this color or pattern.
No reconocido: The club does not accept this color or pattern for the breed.

Color changes

How a Boston Terrier's colors can change over its life.

Negrochanges toÓxido
Pelaje · Con el estado corporal · can change back
Negrochanges toGris
Pelaje · Progresivo
Negrochanges toMarrón
Pelaje · Al sol · can change back
Blancochanges toRoano
Pelaje · Con la edad · from 2 weeks
Negrochanges toNariz de nieve
Nariz · Con la estación · can change back
Negrochanges toRosa
Nariz · Con la estación · can change back

Sources

Each ruling comes from the club's published breed standard or color list.

Published standards

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