J & J's Willamette Valley Rodentry (Jwvr)

J & J’s Willamette Valley Rodentry (Jwvr) are breeders of rats in Salem, OR, in the Willamette Valley near Portland. They have been breeding for several years under owner Julie Arruda’s guidance and follow guidelines from the American Fancy Rat and Mouse Association, with routine health screenings overseen by a colony veterinarian. They are active members of the local rat breeder community and conduct periodic wellness clinics for overall colony health. Their rats are raised in a family-style colony with daily enrichment, socialization and supervised out-of-cage time. The colony resides in climate-controlled rooms with custom-built enclosures featuring hideouts and foraging opportunities. They emphasize low-stress handling and early habituation to human interaction.

Their philosophy supports natural behaviors through multi-generational housing and varied nesting options. They share care resources with new owners and offer consults on diet and environment throughout the rats’ lives.