The history of the Bonnet cavy began as a complete accident in the late 1990s. The late New Zealand cavy judge and breeder, Ethel McKeown of Nemora Cavies based in Whangārei, paired two standard self-cavies together. To her surprise, the resulting litter was born with a distinct, recurring coat anomaly. Rather than dismissing these animals for their coats, Ethel was captivated by the unique look of this natural "fur fault. "The Bonnet breed originally began as an entirely spontaneous, natural genetic mutation. The Bonnet naturally developed the dominant rosette gene and its own unique modifier coat directions entirely from scratch. Recognising its profound genetic potential, Ethel embarked on a meticulous program of selective breeding to isolate, stabilise, and intentionally develop the trait.
Graduation to the Show Bench
Ethel McKeown introduced her new creation to the New Zealand cavy fancy under the Rare Varieties exhibition section.
She officially debuted the breed at the 17th National Show in 1997, where three of her Nemora Bonnets successfully placed under the judges.
Following this breakthrough, a dedicated breed standard was formally drafted. Through the continued stabilisation of the complex modifier genetics, the Bonnet achieved formal status by the 20th National Show in 2000, where they were officially graduated out of Rare Varieties and moved into the competitive Rough-coat Group.
Near-Extinction and the Preservation Rescue
Despite their charismatic appearance, the Bonnet faced a quiet, devastating decline. As older fanciers retired and the number of local breeders dwindled, with no supportive national infrastructure in place at the time, the breed gradually vanished from exhibition tables. Having completely disappeared from the local fancy for over 15 years, our club officially declared the Bonnet extinct in 2024 after years of zero nationwide sightings. It served as a sobering reminder of how easily our homegrown Kiwi breeds can be lost forever.
However, this historic chapter is officially being rewritten. In a miraculous turn of events, a surviving Bonnet cavy has been successfully located. While the technical standard remained permanently preserved within the New Zealand Show Standards, this living link has reignited our preservation mission. Dedicated preservation breeders are now stepping in to carefully manage this vulnerable Kiwi bloodline, pulling the Bonnet back from the brink of total extinction to ensure its story continues on the show bench.
THE BONNET GENETICS
The Dominant Gene (R): Controls the presence of rosettes in the coat (where (rr) results in a smooth coat).
The Modifying Genes (mm): Enhance the (R) gene effect. Full, beautiful rosetted coats require an (RRmm) genotype.
The Reverse Hair Trick: When the genotype features (RrMM) or (RRMM), the cavy displays the characteristic backward-growing hair on its toes and feet, which was heavily tied to the development of the Bonnet's unique body ruffles.
