Founded by Dennis Gulla, Sierra Canine is a premier dog training service based in Butte County, California. Dennis's journey into dog training began at the age of 18 under the mentorship of Navy SEAL and dog trainer Tom Massalino. Over the years, Dennis has honed his skills, working with various dog training companies and law enforcement agencies, including the City of Miami Police Department. His extensive experience spans over 28 years, during which he has trained dogs for law enforcement, competed in working dog sports, and served as a certified judge for the Working Dogs of America organization .