Rat Terrier

Temperament: Keenly observant, high energy dog. Good with families and other dogs, reserved with strangers, and of course has high prey drive for vermin and small game.

Height: 10-13 inches (miniature), 13-18 inches (standard)

Weight: 10-25 pounds

Life Span: 12 – 18 years

Breed Average Outlier Index: 0.44

Breed Average Genetic Relatedness: -0.04

Breed Average Internal Relatedness: 0.02

Last 10 Recently Added Public Dogs!

No.NameGenderOutlier IndexAverage Genetic RelatednessInternal Relatedness
1 Casper F0.410.02-0.09
2 Kelso M0.36-0.040.35
3 Waterwheel Creek Set To Stun M0.55-0.040.02
4 Westside Deckers Sputnik One M0.43-0.040.12
5CH Felixville's Nostromo F0.56-0.090.08
6GCH CH Felixville's Skippin CJ Rougarou M0.52-0.070.01
7 Angel Flight's Amelia Pond F0.54-0.05-0.04
8 GG It's Complicated @ AF F0.38-0.01-0.05
9 Angel Flights Sgt Peppers Puff F0.41-0.02-0.07
10 QGK's Tiger Lily Liga F0.26-0.020.34

Once a popular breed in the US, the modern Rat Terrier is the descendant of generic English terriers used to control vermin on farms. Said to have been crossed to breeds such as the Italian Greyhound, Beagles and Manchester Terriers in the 19th century, their popularity decline with the advent of modern rodent control - but the diversity in the breed has remained.

Rarely seen, but CHIC recommends testing for patellar luxation, cardiac abnormalities, pancreatic issues, hip dysplasia, and Legg–Calvé–Perthes. Dental disease may also be of concern.

The follow includes dogs with birthdates listed in the database.

DLA Haplotypes in the Breed

The Dog Leukocyte Antigen or DLA is the region in the canine genome that controls the immune system, among other things. There are three classes or areas, and the VGL Canine Diversity Test genotypes or records the two regions with the most variation. Because it is an area that mutates more rapidly than others, the method VGL uses is ideal for identifying specific combinations of DNA, and not merely showing whether a dog inherited two of the same sets of genetics from its parents or two different ones.

"Haplotype" is a generic name for a set of genes that are bound together and inherited as a set. The DLA Class I and Class II haplotypes are very tightly bound and represent about 2 million base pairs of DNA - a sizeable chunk. These two haplotypes together make an extended haplotype that is nearly always passed from parent to puppies as a pair. We therefore have two tables below showing both the combinations of DLA found in this breed and how often they appear, and also how often they appear individually.

Remember that frequency percentages do not show how many dogs carry them, but rather how many of these haplotypes exist in the breed as a whole. Every dog has two sets of DLA haplotypes, one inherited from dam, and one inherited from sire. These almost never recombine in new generations.

DLA Class I/Class II Combinations :

Class I HaplotypeClass II HaplotypeFrequency in the Breed

DLA Frequencies :

ClassHaplotypeFrequency in the Breed
Class I10022.78%
Class I10082.78%
Class I10092.78%
Class I10112.78%
Class I10128.33%
Class I10165.56%
Class I10305.56%
Class I104016.67%
Class I10462.78%
Class I10542.78%
Class I10745.56%
Class I10878.33%
Class I10925.56%
Class I11052.78%
Class I11282.78%
Class I12002.78%
Class I12115.56%
Class I12342.78%
Class I12522.78%
Class I12542.78%
Class I12572.78%
Class I12582.78%
Class II20012.78%
Class II20022.78%
Class II20038.33%
Class II20058.33%
Class II20092.78%
Class II20112.78%
Class II20142.78%
Class II20152.78%
Class II20175.56%
Class II20212.78%
Class II202216.67%
Class II20235.56%
Class II20252.78%
Class II20288.33%
Class II203111.11%
Class II20375.56%
Class II20432.78%
Class II20792.78%
Class II20812.78%

Search For a Rat Terrier

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List of Public Dogs

No.NameGenderOutlier IndexAverage Genetic RelatednessInternal Relatedness
1Angel Flight's Amelia PondF0.54-0.05-0.04
2Angel Flights Sgt Peppers PuffF0.41-0.02-0.07
3Blackwood I'll Have Your HideF0.53-0.01-0.05
5Diamond Willow Chisum At BlkwdM0.53-0.100.12
6Felixville's NostromoF0.56-0.090.08
7Felixville's Skippin CJ RougarouM0.52-0.070.01
8GG It's Complicated @ AFF0.38-0.01-0.05
10QGK's Tiger Lily LigaF0.26-0.020.34
11RnB's Virgin QueenF0.340.01-0.08
12Rpk WarrenMtns Three WishesF0.45-0.06-0.16
13Sugarloafer Solo Autumn AriaF0.67-0.11-0.04
14WarrenMtn's Dark KnightM0.42-0.07-0.06
15Waterwheel Creek Set To StunM0.55-0.040.02
16Westside Deckers Sputnik OneM0.43-0.040.12
17Wild Heart Take A Chance On Me River RidgeM0.330.02-0.10
18Wild Heart's Little Babalu At River RidgeM0.30-0.030.11

Breeder list coming soon.