Cesar Millan His Pit Bull Allegedly Killed Queen Latifah's Dog Lawsuit Claims Cesar Tried Covering it Up

Lidia Matiss claims in 2017, she went to her mom's office building in Van Nuys, CA, a building she says is owned by Cesar. Lidia says she was visiting her mom, who worked for Cesar.

She says she encountered Cesar's pit bull, Junior, who was roaming the halls unsupervised and unleashed. She says the dog attacked her, repeatedly biting her on the legs, including her left calf. She went to the ER and it became apparent ... her injures were severe.

The lawsuit says Lidia was a "star gymnast" who performed at a Level 10 ... the highest level in the USA Gymnastics Junior Olympics Programs. She says she was being actively recruited by the University of Pennsylvania, but everything changed with the dog bite. She could no longer compete due to the extreme pain she was enduring.

Lidia -- repped by attorneys Omar G. Qureshi and Brian M. Adesman -- says Cesar knew Junior had a history of violence yet regularly allowed the dog to roam free. She says the dog had bitten several people and mauled several dogs, including one dog owned by Queen Latifah.

According to the lawsuit, Queen Latifah brought 2 of her dogs to Cesar's Dog Psychology Center in Santa Clarita, CA. She says Junior mauled one of her dogs to death, and Lidia claims Cesar covered it up by telling his staff to tell Queen Latifah the dog was hit and killed by a car.

Cesar filed an answer to the lawsuit, claiming, among other things, Lidia assumed the risk of being bitten because she knew of the danger. He also claims Lidia herself was negligent, although he doesn't say how.

Lidia says the bite left her impaired ... wounded, disfigured and she continues to suffer physical and emotional pain. She's suing for unspecified damages.