Knighterrant Mastiffs - Gentle Giants - Puppies Available to approved homes

(613) 821-6279

Knighterrant Mastiffs

Breeder of English Mastiff puppies. Showing English Mastiffs of Distinction since 1988. 

Subscribe to get news on litters and shows!

(613) 821-6279

Knighterrant Mastiffs

Breeder of English Mastiff puppies. Showing English Mastiffs of Distinction since 1988. 

Subscribe to get news on litters and shows!

About Us

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Welcome to our new website. ​

  ​​We started with our first Mastiff, as a pet, in 1988 and have never looked back. We fell in love with Tiny who turned out to be the best in her litter, a true gentle giant. So we showed her to her championship, had her hips and eyes and elbows certified and bred her in 1992. We have been showing, breeding and placing Mastiffs ever since. 

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Happy, Healthy Championship Bloodlines

Breeder of 24 litters of English Mastiff Puppies in the past 27 years from this line and breeding to the following Champions:  Ch. Grenier Hall  Jedadiah, Ch. Acorn Hills Silent Knight,  Ch. Baskerville's Magnus Augustus, Ch. Baskerville's Prince Lothar, Ch. Knighterrant's Heavy Duty, Ch. Therecco's Dragon Knighterrant, Ch. Knighterrant Sherman the Tank, Ch. NorthernPaws OscarKnighterrant, to name a few.

Ch. NorthernPaws OscarKnighterrant "Baxter"

A Forever Friend

 All our breeding stock is tested for OFA hips, elbows, eyes, and PennHip, PRA, DM, CMR1 and the long haired gene.  In addition we belong to the  CKC, MCOA and OKC  so do further testing as required. Only the clear and best dogs are bred.

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Thank you for visiting our website. Our goal as a reputable breeder is to provide you with information about the English Mastiff and English Mastiff puppies,  when we are breeding, and to give you the important links we think you should know about. If you have any questions or comments about our dogs, our website, you need more information or you want to inquire about puppies then we want to hear from you. Please use the method of your choice below to contact us





We have a Frequently Asked Questions page for your reference. If you cannot find the information you are looking for, please contact us with your questions or comments.

Knighterrant Mastiffs

Knighterrant Mastiffs 2661 Stagecoach Road Osgoode, ON K0A 2W0 CA

(613) 821-6279

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