Qualley and LaBeouf split shortly after FKA Twigs accused the actor of "relentless abuse" during their relationship.
In a revealing Elle profile, the musician said her ex-boyfriend told her that killing the animals helped him get into character for a role.
On the "Grounded with Louis Theroux" podcast, the musician detailed how the actor would wake her up at night to "accuse" her of "all sorts of things."
The director reportedly dropped the controversial star from her new movie after he violated her "zero asshole policy."
The director said she stands with singer FKA twigs and other women who have accused the actor of abuse in recent weeks.
The singer is speaking out about being "hurt emotionally" by Shia LaBeouf days after FKA twigs accused the actor of assault, battery and abuse.
“What I went through with Shia was the worst thing I’ve ever been through in the whole of my life," the musician said of her relationship with the actor.
A virtual “Fast Times at Ridgemont High” table read starring Sean Penn, Brad Pitt, Julia Roberts, and more led to LaBeouf shining as the stoner surfer Spicoli.
Talking to Ellen DeGeneres, the actor described how he wrote the script for his new film during a rehab stint after his 2017 arrest.
Renée Zellweger, Eddie Murphy, Adam Sandler and Shia LaBeouf step into rich roles that double as meta commentary on their careers.