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: 0.48

Breed Average Genetic Relatedness: -0.05

Breed Average Internal Relatedness: 0.00

Last 10 Recently Added Public Dogs!

No.NameGenderOutlier IndexAverage Genetic RelatednessInternal Relatedness
1 Felixville's Nostromo F0.56-0.070.08
2 Felixville's Skippin CJ Rougarou M0.57-0.100.02
3 Angel Flight's Amelia Pond F0.56-0.03-0.04
4 GG It's Complicated @ AF F0.410.00-0.05
5 Angel Flights Sgt Peppers Puff F0.37-0.04-0.08
6 QGK's Tiger Lily Liga F0.360.030.34
7CH RnB's Virgin Queen F0.39-0.03-0.08
8 Diamond Willow Chisum At Blkwd M0.63-0.140.12
9 Blackwood I'll Have Your Hide F0.59-0.05-0.05
10GCH CH Sugarloafer Solo Autumn Aria F0.68-0.14-0.04

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
1040202214.29%
1087203114.29%
1211200514.29%
100220017.14%
101120117.14%
101220037.14%
104020287.14%
120020437.14%
123420027.14%
125220817.14%
125820097.14%


DLA Frequencies :

ClassHaplotypeFrequency in the Breed
Class I10027.14%
Class I10117.14%
Class I10127.14%
Class I104021.43%
Class I108714.29%
Class I12007.14%
Class I121114.29%
Class I12347.14%
Class I12527.14%
Class I12587.14%
Class II20017.14%
Class II20027.14%
Class II20037.14%
Class II200514.29%
Class II20097.14%
Class II20117.14%
Class II202214.29%
Class II20287.14%
Class II203114.29%
Class II20437.14%
Class II20817.14%


Search For a Rat Terrier

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List of Public Dogs

No.NameGenderOutlier IndexAverage Genetic RelatednessInternal Relatedness
1Angel Flight's Amelia PondF0.56-0.03-0.04
2Angel Flights Sgt Peppers PuffF0.37-0.04-0.08
3Blackwood I'll Have Your HideF0.59-0.05-0.05
4Diamond Willow Chisum At BlkwdM0.63-0.140.12
5Felixville's NostromoF0.56-0.070.08
6Felixville's Skippin CJ RougarouM0.57-0.100.02
7GG It's Complicated @ AFF0.410.00-0.05
8QGK's Tiger Lily LigaF0.360.030.34
9RnB's Virgin QueenF0.39-0.03-0.08
10Rpk WarrenMtns Three WishesF0.51-0.10-0.17
11Sugarloafer Solo Autumn AriaF0.68-0.14-0.04
12WarrenMtn's Dark KnightM0.44-0.10-0.06
13Wild Heart Take A Chance On Me River RidgeM0.350.00-0.10
14Wild Heart's Little Babalu At River RidgeM0.330.080.11

Breeder list coming soon.