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A series of your questions, researched for you and answered by health experts. If you’d like to submit a question, please email

Entries in this blog

Ask Aimee: International collaborations - North American launch of the Respiratory Function Grading Scheme

Working together: dog breeders, researchers, veterinarians, and kennel clubs have developed a truly international screening scheme for respiratory function.  UPDATE: 5/25/2023 The OFA - just published info on participating in the Respiratory Function Grading Scheme  - see their Overview at - includes an event planning guide and instructions/rfgs forms.   On 20 January 2023, I had the privilege of attending the Rose City Classic Dog Show, which

Aimee Llewellyn-Zaidi

Aimee Llewellyn-Zaidi in Ask Aimee

Ask Aimee: I'm concerned about DM (degenerative myelopathy) in my dog, what new information should I share with my vet?

After the recent publication of Degenerative Myelopathy - Diagnosis and Inheritance, we received an excellent query from an experience breeder of French Bulldogs, who was concerned that her middle-aged dog was showing "classic" signs of Degenerative Myelopathy (DM). The dog had a clear genetic test for the SOD 1 mutation, but was experiencing clinical signs associated with DM: awkward and uncoordinated hind gait, loss of balance and falling when turning and also when stressed. The breeder h

Ask Aimee: What's the difference between pedigree COI and genomic COI?

Recently we have had questions from dog breeder health advisors about using inbreeding tools, particularly pedigree-based tools such as estimating Coefficients of Inbreeding (COI). This blog discussion describes COIs, some advantages and disadvantages, and provides thoughts on usage.    There are several resources available to both individual breeders and breed organizations (clubs and kennel clubs) that can help to monitor and track genetic diversity, and estimate an individual dog's

Ask Aimee: Can my dog's ancestry test tell me who its parents are?

Recently we received a question from a Harmonization of Genetic Testing (HGTD) user, who had wanted to use an "Ancestry" genetic test to determine a puppy's likely sire. It is not uncommon, when trying to determine the right test for your purposes, to mistake "Ancestry" tests for parentage, or genetic identification tests. The information below talks about what ancestry, or breed mix genetic tests are, how they can be used, and some of the limitations. What is an Ancestry/Breed Mix Genetic

Aimee Llewellyn-Zaidi

Aimee Llewellyn-Zaidi in Ask Aimee

Is COVID-time the Right Time to Kon Mari Your Genetic Testing Plans?

Is COVID-time the Right Time to Kon Mari Your Genetic Testing Plans? a blog by Aimee Llewellyn-Zaidi, MSc; Project Director of the IPFD Harmonization of Genetic Testing for Dogs (HGTD) initiative.    “People around the world have been drawn to this philosophy not only due to its effectiveness, but also because it places great importance on being mindful, introspective and forward-looking.” -Marie Kondo, Founder of the Kon Mari method. If you’ve already, like so many of us, us

Aimee Llewellyn-Zaidi

Aimee Llewellyn-Zaidi

Ask Aimee: Breeder wants to know about prioritising a new genetic test

Dear Aimee, Do you know if the JADD in NSDTR is simple mendelian or complex? UC Davies genetics lab is offering a test. Do you know if it is a reliable test? Do you think the test should be mandatory for NSDTR used for breeding given its early age of onset and serious impact on an affected dog's health and welfare? I would be very grateful for your comments. Kind Regards, Anon UK NSDTR Breeder   Dear NSDTR Breeder, It is my understanding that the JADD (Juvenile Addi

Aimee Llewellyn-Zaidi

Aimee Llewellyn-Zaidi

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