Aaron Phypers tells PEOPLE that Denise Richards was allegedly not involved in their animals' lives after police responded to his home when Richards showed up attempting to pick up one of their dogs. She also alleged that he put one of their dogs down without telling her,

Richards accused Phypers of having their dog put down after her impromptu pop up at their Calabasas, Calif., home.

"Real Housewives" star Denise Richards allegedly showed up unannounced to her estranged husband's home Sunday amid their tumultuous divorce.