Diana Walbert considers herself lucky today.
Police say Diana's boyfriend, Nicholas Clark started assaulting her around 8 p.m. yesterday. Allegedly punching her several times and threatened her with a large samurai sword. That's when Lily, Diana's 3-year-old Pit-Bull came to the rescue.

"As soon as (Mr. Clark) made contact with me, she jumped and grabbed him in the back of the calf and then bit him in his arm a couple times," said Walbert. "No matter what, i'll be there for Lily and she'll be there for me."

Neighbors consider Lily a hero and Diana a lucky woman.

"Good thing she had that dog to save her life or she would have been dead," said neighbor Patricia Carlson. "She's very lucky."

"In this case the owner of the dog was protected by the dog," said Capt Barry Swanson of the Jamestown Police Department. "In this particular case, it was a lady's best friend, it did protect her, and probably stopped a further assault from taking place."

Clark was charged with Assault in the third degree, Menacing in the second degree, and Criminal Possession of a weapon in the third degree.