An Irvine dog trainer who operated Happy K9 Academy has been found guilty of multiple charges related to the deaths of dogs entrusted to his care and efforts to conceal evidence, according to the Orange County District Attorney’s Office.
Kwong “Tony” Chun Sit, 54, was convicted on 11 felony counts of animal cruelty, seven misdemeanor counts of attempted destruction of evidence, and one misdemeanor count of destroying evidence. The convictions followed an extensive investigation into the deaths of several dogs connected to his dog training and boarding business.
The case began in June 2025 when a pet owner raised concerns about the circumstances surrounding the death of a dog that had been left in Sit’s care. Investigators learned that Sit had informed the owner the dog had died in its sleep and had already been cremated.
Following the complaint, the Irvine Police Department’s Animal Services Unit launched an investigation. Authorities recovered the remains of multiple dogs from various crematoriums. Investigators determined that two dogs had already been cremated, preventing any determination of how they died.
Evidence presented during the case showed that eight of the remaining nine dogs died from heat-related conditions, while another suffered fatal blunt-force injuries. Prosecutors stated that the animals were among those being boarded or trained through Happy K9 Academy, which offered training and boarding programs lasting from one to four weeks.
Sit’s girlfriend, Tingfeng Liu, 24, was also convicted in connection with the case. She was found guilty of charges including accessory to a felony, destruction of evidence, and attempted destruction of evidence.
Orange County District Attorney officials stated that the convictions reflect a commitment to holding individuals accountable for animal abuse and neglect. Prosecutors emphasized that animals placed in professional care deserve protection and humane treatment.
Sit faces a maximum potential sentence of nearly 14 years in state prison, while Liu could face up to four years. Sentencing is expected to take place at a later date.
Authorities continue to encourage the public to report suspected cases of animal abuse or neglect, stressing the importance of safeguarding the welfare of animals and ensuring accountability when violations occur.