Canines Unleashed Inc. is a veteran-operated dog daycare and boarding facility in San Diego's Grantville district, running a 4,500-square-foot climate-controlled indoor-outdoor complex at 4375 Twain Avenue in the 92120 ZIP. CEO Keith Matlock founded the business in 2019, and the facility runs cage-free boarding with at least one staff member sleeping on-site overnight so dogs are never kenneled or left unattended. Every new dog completes a temperament test before joining the play group, and required vaccinations include rabies, bordetella, and DPP — the same immunization baseline maintained at Mission Valley Pet Clinic in Grantville. The specially coated flooring allows full sanitization and disinfection between sessions, eliminating the bacterial risks common to outdoor grass-and-soil facilities. Live webcams stream from the play suites through a dedicated mobile app that also handles scheduling, payments, and messaging, giving owners real-time visibility into their dog's activity. Daycare packages split between full-day and half-day rates, and the wash-and-dry bay handles post-play baths without the pricing markup of a separate grooming facility. Twain Avenue sits half a mile off the I-8 and I-15 interchange, making the facility accessible from both Mission Valley to the west and the Mission Gorge Road corridor to the north. The retail counter stocks toys and treats at below-big-box pricing, a convenience add-on that parallels the raw-diet and specialty-food sourcing at Just Food For Dogs elsewhere in Grantville. Seasonal programming includes themed photo days, bacon-flavored bubble sessions, and indoor snow events, and military families receive a standing reduced rate on all daycare and boarding packages.