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Thumbelina

Chihuahua

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Genetic Breed Result

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Chihuahua

Chihuahuas have a huge personality that defies their tiny frame, known to be highly active and intelligent canines.

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Genetic Stats

Wolfiness

0.3 % LOW

Predicted Adult Weight

6 lbs

Genetic Age
34 human years

Based on the date of birth provided

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Breed Reveal Video

Our algorithms predict this is the most likely family tree to explain Thumbelina’s breed mix, but this family tree may not be the only possible one.

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Health Summary

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Thumbelina has one variant that you should let your vet know about.

ALT Activity

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Thumbelina inherited both copies of the variant we tested

Why is this important to your vet?

Thumbelina has two copies of a variant in the GPT gene and is likely to have a lower than average baseline ALT activity. ALT is a commonly used measure of liver health on routine veterinary blood chemistry panels. As such, your veterinarian may want to watch for changes in Thumbelina's ALT activity above their current, healthy, ALT activity. As an increase above Thumbelina’s baseline ALT activity could be evidence of liver damage, even if it is within normal limits by standard ALT reference ranges.

What is ALT Activity?

Alanine aminotransferase (ALT) is a clinical tool that can be used by veterinarians to better monitor liver health. This result is not associated with liver disease. ALT is one of several values veterinarians measure on routine blood work to evaluate the liver. It is a naturally occurring enzyme located in liver cells that helps break down protein. When the liver is damaged or inflamed, ALT is released into the bloodstream.

Breed-Relevant Genetic Conditions

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Progressive Retinal Atrophy, prcd

Identified in Chihuahuas

Progressive Retinal Atrophy, crd4/cord1

Identified in Chihuahuas

Neuronal Ceroid Lipofuscinosis 7, NCL 7

Identified in Chihuahuas

Spinocerebellar Ataxia with Myokymia and/or Seizures

Identified in Chihuahuas

Intervertebral Disc Disease (Type I)

Identified in Chihuahuas

Additional Genetic Conditions

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Explore the genetics behind your dog’s appearance and size.

Base Coat Color

Base Coat Color

Dark or Light Fur
E (Extension) Locus
Can have dark fur
Dark brown pigment
Cocoa
No impact on fur and skin color
Red Pigment Intensity LINKAGE
I (Intensity) Loci
Any light fur likely yellow or tan
Brown or Black Pigment
B (Brown) Locus
Black or gray fur and skin
Color Dilution
D (Dilute) Locus
Dark (non-dilute) fur and skin
Coat Color Modifiers

Coat Color Modifiers

Hidden Patterning
K (Dominant Black) Locus
More likely to have patterned fur
Body Pattern
A (Agouti) Locus
Black/Brown and tan coat color pattern
Facial Fur Pattern
E (Extension) Locus
No dark mask or grizzle facial fur patterns
Saddle Tan
Likely saddle tan patterned
White Spotting
S (White Spotting) Locus
Likely to have large white areas in coat
Roan LINKAGE
R (Roan) Locus
Likely no impact on coat pattern
Merle
M (Merle) Locus
May express merle
Harlequin
No impact on coat pattern
Other Coat Traits

Other Coat Traits

Furnishings LINKAGE
Likely unfurnished (no mustache, beard, and/or eyebrows)
Coat Length
Likely long coat
Shedding
Likely heavy/seasonal shedding
Coat Texture
Likely straight coat
Hairlessness (Xolo type) LINKAGE
Very unlikely to be hairless
Hairlessness (Terrier type)
Very unlikely to be hairless
Oculocutaneous Albinism Type 2 LINKAGE
Likely not albino
Other Body Features

Other Body Features

Muzzle Length
Likely medium or long muzzle
Tail Length
Likely normal-length tail
Hind Dew Claws
Unlikely to have hind dew claws
Back Muscling & Bulk (Large Breed)
Likely normal muscling
Eye Color LINKAGE
Less likely to have blue eyes
Body Size

Body Size

Body Size 1
Smaller
Body Size 2
Larger
Body Size 3
Smaller
Body Size 4
Smaller
Body Size 5
Intermediate
Performance

Performance

Altitude Adaptation
Normal altitude tolerance
Appetite LINKAGE
Normal food motivation
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Through Thumbelina’s mitochondrial DNA we can trace her mother’s ancestry back to where dogs and people first became friends. This map helps you visualize the routes that her ancestors took to your home. Their story is described below the map.

Haplogroup

A1b

Haplotype

A289

Map

A1b

Thumbelina’s Haplogroup

This female lineage was very likely one of the original lineages in the wolves that were first domesticated into dogs in Central Asia about 15,000 years ago. Since then, the lineage has been very successful and travelled the globe! Dogs from this group are found in ancient Bronze Age fossils in the Middle East and southern Europe. By the end of the Bronze Age, it became exceedingly common in Europe. These dogs later became many of the dogs that started some of today's most popular breeds, like German Shepherds, Pugs, Whippets, English Sheepdogs and Miniature Schnauzers. During the period of European colonization, the lineage became even more widespread as European dogs followed their owners to far-flung places like South America and Oceania. It's now found in many popular breeds as well as village dogs across the world!

A289

Thumbelina’s Haplotype

Part of the large A1b haplogroup, we have detected this haplotype most commonly in Standard Schnauzers, Rat Terriers, and Bullmastiffs.

Some other Embark dogs with this haplotype:

A1b is the most common haplogroup found in German Shepherds.

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The Paternal Haplotype reveals a dog’s deep ancestral lineage, stretching back thousands of years to the original domestication of dogs.

Are you looking for information on the breeds that Thumbelina inherited from her mom and dad? Check out her breed breakdown and family tree.

Paternal Haplotype is determined by looking at a dog’s Y-chromosome—but not all dogs have Y-chromosomes!

Why can’t we show Paternal Haplotype results for female dogs?

All dogs have two sex chromosomes. Female dogs have two X-chromosomes (XX) and male dogs have one X-chromosome and one Y-chromosome (XY). When having offspring, female (XX) dogs always pass an X-chromosome to their puppy. Male (XY) dogs can pass either an X or a Y-chromosome—if the puppy receives an X-chromosome from its father then it will be a female (XX) puppy and if it receives a Y-chromosome then it will be a male (XY) puppy. As you can see, Y-chromosomes are passed down from a male dog only to its male offspring.

Since Thumbelina is a female (XX) dog, she has no Y-chromosome for us to analyze and determine a paternal haplotype.

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