A woman who was fatally mauled by her dog was trying to give it a bath when it attacked, police said.

Shawna Willey, 30, died Friday. Her daughter apparently witnessed the attack by the 120-pound Presa Canario and alerted a neighbor who called authorities, Coral Springs Police spokesman Rich Nicorvo said.

It was not clear what made the dog attack, Nicorvo said.

When police arrived at the house, the officers saw the dog standing over the woman's body in the backyard near the swimming pool.

The dog made aggressive movements toward officers when they entered the yard, so they shot and killed it.

A coroner will determine Willey's exact cause of death.

Willey was cited in Hillsborough County several years ago for having dangerous dogs, according to court records.