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Sirius Canine Fertility
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Home Vision, Mission & Values
Our Foundation Since Day One

Vision, Mission & Values

The principles that guide everything we do at Sirius Canine Fertility — from the science we practice to the compassion we bring to every visit.

Get Started Our Services

Our Mission

Why we do what we do — and how we do it.


Our purpose is to preserve your dog's legacy.

We know how much time and energy you devote to finding that 'perfect match'.

By combining the latest science-based methods, cutting-edge technology and our staff's devotion to your dog's reproductive success, we partner with you to help your dog attain optimal reproductive health and well-being.

Our professional team is made up of experienced dog people — an AKC professional judge, behaviorists, and a number of well-respected breeders. We share your passion for dogs.

100+ years of combined veterinary experience
AKC judges, behaviorists, and well-respected breeders on staff

We'll deliver excellence and integrity with compassion in a happy and relaxing environment. Happy, healthy, stress-free dogs make happy, healthy, stress-free puppies.

Our Vision

Where we're headed — and how we'll get there.


Our goals will be reached through our dedication to studying scientific breakthroughs in canine reproductive health, the collection, analysis and compilation of relevant data, and state of the art storage and shipping technologies.

The foundation for our continued growth will be guided by our core values.

Scientific Research
Data & Analysis
Modern Technology

Our Promise to You

The commitments we make to every client and every dog.


You know your dog better than anyone. We will respect your judgment and listen.

By following the highest ethical standards and maintaining integrity, we'll earn your trust.

We'll make recommendations based on expertise. The decisions will always be yours.

Procedures will be explained thoroughly, and all questions answered to your satisfaction.

Staying on the cutting edge of scientific breakthroughs in fertility and optimal health.

Comprehensive and individually tailored service is what every client can expect — every time.

Preserving your dog's legacy through purposeful breeding is our goal.

We love dogs! We'll treat your dog as if he or she is our own.

Providing client education is a privilege.

Dogs love it here! We'll make your dog's visit as comfortable and stress-free as possible.

Have Questions?

Phone
(530) 273-9123
Email
[email protected]
Schedule a Visit View Show Schedule

Explore Our Services

All Services Overview Semen Collection & Freezing Transcervical Insemination Progesterone Testing Board and Breed Exports & Imports Testicular Harvest Supplies & Shipping Kits Brucella Testing Export Blood Work Panels Surgical Implant Referrals Stud Dog Database Weekend On Call Assistance Full Pricing Shipping Instructions

Frequently Asked Questions

Everything you need to know about our breeding services, semen freezing, and facilities.

How long does frozen semen keep in storage?

The technology that created this canine semen freezing technique has been around for 36 years and we are using semen that has been stored that long and getting puppies!!

We are assuming the semen will be good for an indefinite period of time as long as it is kept at a constant temperature in liquid nitrogen.

What if the electricity goes out, what happens to the semen?

The storage tanks are completely self-contained using liquid nitrogen. No electricity is required so power failures are not a problem!!

Why should I choose Sirius Canine Fertility?

Our entire staff at Sirius Canine Fertility, Inc take this very seriously and the level of passion they have in their work really shows! The technical staff is completely dedicated to ensuring your breedings are done according to your bitch's schedule, not our schedule or convenience.

Our techs spend many hours educating clients to make sure the best possible procedures are done for that particular bitch. Our success rate with Transcervical Insemination done in our office is over 85%. With services like one hour progesterone testing, we can pinpoint ovulation timing even better.

We believe in always staying on the cutting edge of technology. Our equipment is state of the art, from our Sperm Vision CASA equipment, to our TCI machines, to the one hour progesterone assay testing equipment.

What are the differences between fresh, fresh chilled, and frozen semen?

Fresh semen is when you have the dog and bitch available, the collection is done from the male and immediately inseminated into the bitch.

Fresh chilled semen is collected and added to our media and shipped to the bitch owner in one of our Sirius Shippers. The semen when mixed with our media lives for several days. I (Bridgett) preformed testing on one of my own dog's semen and still had motility after 2 weeks!!

Frozen semen generally lives about 8-12 hours on average after thawing. Frozen semen can only be used through transcervical or surgical inseminations. Fresh or fresh chilled semen can be implanted with either vaginal inseminations, surgical inseminations or transcervical procedures.

What are your success rates using frozen semen at your facility?

Outstanding! We offer in-house, Transcervical inseminations for either fresh, fresh chilled, or frozen semen. Our success rates for these are over 85%, as good, if not better than natural breedings!!

We do not thaw your frozen semen prior to passing the catheter during the TCI procedure, as once thawed, semen cannot be refrozen. This way, we can ensure that the procedure can be done on your bitch prior to thawing semen, so if for any reason your bitch cannot be catheterized, your semen is not wasted.

My bitch is flagging and her smears are cornified, do I still need progesterone testing?

If you want the best chance of success, then yes, progesterone testing is necessary. Behaviors like "flagging" and vaginal cytology indicating cornification are estrogen induced. Ovulation is progesterone induced. These should be in sync with each other, but we are finding over and over again, they are not.

If you are using frozen semen, progesterone testing must be done to ensure the semen, which only lives 8-12 hours, is implanted at the correct time.

My vet uses an "in-house" progesterone test, is this ok?

This depends on the type of in-house test your vet utilizes. If they are using a color change test, I would recommend against it for the most accurate timing.

If your vet has the same equipment as we do, in-house, quantitative analyzers for progesterone assay (most do not) then this type of in-house testing would be recommended. When your vet or breeder friends are referring to "in-house" testing, make sure of which type they are talking about.

I live in Canada, my progesterone numbers are different. How do I interpret them?

The progesterone levels here are recorded in nanograms and the testing done in Canada is recorded in nanomoles so it is not comparing apples to apples.

The nanogram is multiplied by 3.14 to compare to the Canadian system. Generally speaking, ovulation occurs around 5 ng/ml (or approximately 15.7 nmol/L in the Canadian system).

What is the best procedure for using frozen semen?

Transcervical Insemination (TCI) is the preferred method for using frozen semen. The semen is deposited directly into the uterus using a specialized catheter, giving the best possible chance for conception.

Our success rates with TCI are over 85%, making it as effective as — if not better than — natural breedings.

My dog has an enlarged prostate. Is neutering the only option?

If your dog has an enlarged prostate and you want to preserve his genetics, we recommend collecting and freezing his semen before any surgical procedure. This way, his legacy is preserved regardless of the treatment path chosen.

Please contact us to discuss your specific situation — we can help you make the best decision for your dog.

What is the best age to collect my dog for freezing?

We recommend collecting your dog when he is young and in his prime — typically between 2 and 5 years of age. However, we can successfully collect and freeze semen from dogs of various ages.

The sooner you preserve his genetics, the better the quality and quantity of the collection will be.

What is the optimum progesterone level at the time of breeding?

Ovulation generally occurs at approximately 5 ng/ml. After ovulation, the eggs need about 48 hours to mature before they can be fertilized.

For frozen semen, we typically breed when progesterone levels are between 15-25 ng/ml, depending on the individual bitch's cycle. Precise timing is critical with frozen semen since it only lives 8-12 hours after thawing.

I'm looking for a stud dog directory.

We maintain records of many stud dogs whose semen is stored at our facility. Please contact our office and we'll be happy to help connect you with available stud dog owners.

Based on 60+ reviews

What Our Clients Say

Real stories from breeders and dog owners who trust Sirius Canine Fertility.

Google Google Reviews Facebook Facebook View All Reviews
"The last two times frozen semen was used from my boys the breeding resulted in a litter of 11 and a litter of 10 – large for any Soft Coated Wheaten Terrier litter. You do a wonderful job in collecting, storage (one batch was 10 years old) and coordinating shipping. I just wanted to let you know how much confidence I have in you."
RA
Roni Andrews
Wheaten Terrier Breeder
"Thank you for your service to our sport. Best in the business. Y'all have magic hands…."
SB
Storm Britten Ilouno
"We are so thankful for the work and care these guys give. We did a fresh TCI with them 12-19-14 and on 2-15-15 had 10 healthy Goldendoodles ❤️ Thank you for your service and knowledge."
RG
Rollins Goldendoodles
Marysville, CA
"I've been a client for a few years now and let me tell you, THEY. ARE. AMAZING! They are so accommodating and personable, they explain everything and answer all of your questions. You can definitely tell that they CARE about their clients and the safety of their dogs."
V
Vanessa
Gridley, CA
"I am so blessed to have Sirius Canine Fertility so close by. They are always helpful and are so knowledgeable and willing to go the extra mile for their clients."
BS
Barbara Schwab
"You and everyone else in your company with whom I have had the pleasure to do business with simply rock 🙂 Fantastic service. Siriusly!!!"
JJ
Jussi Jalasjoki
"My Champion Boxer girl's time came 1 month sooner than anticipated and my local clinic couldn't accommodate me. Sirius said come on over! The folks were super nice, professional yet caring. So many top breeders I highly respect recommended them. I can see why!"
C
Christina
Hayward, CA
"As a first time frozen semen user, I had many questions. From my initial phone call I knew I was dealing with the right people. Everything worked out perfectly — a healthy litter of five females and three males. If anyone is considering frozen semen and the TCI procedure, look no further than Sirius Canine Fertility."
D
Dave
Sonora, CA
"Very professional, caring staff. Always good communication and treat my dog well ❤️"
L
Lesli
Bangor, CA
"Staff are fantastic to work with. We have had a great experience, staff answered all of my questions and were great with our girl. Highly recommend this place for breeders!"
M
Marianne
Carson City, NV
"Sirius Canine has an incredibly friendly and knowledgeable staff. They have been very successfully walking us through the process of artificial insemination. So glad we found them."
J
Jenna
Benecia, CA
"They're a really top notch service, I've heard of people coming from absurd distances just to work with them. The staff is very knowledgeable — not just vet techs trying to get paid. I'm always very skeptical, however I felt very comfortable by my 3rd visit. I highly recommend them."
L
Lynn
Cottonwood, CA
View All Reviews

Happy, healthy, stress-free dogs make happy, healthy, stress-free puppies.

That's the Sirius Canine Fertility promise.

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Office Location

12444 Nevada City Hwy
Grass Valley, CA 95945

Office: 530.273.9123
Fax: 530.273.9128

Mailing Address

P.O. Box 741
Cedar Ridge, CA 95924

(All mail must go to P.O. Box, not physical address)

Business Hours

Mon, Tue, Thu, Fri: 9am - 5pm

Wed: 9am - 1pm

Closed daily 1:00pm - 1:30pm for lunch

Closed weekends

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