The 48-year-old actress said her two sons have grown up and now they're beginning to lead their own lives, reported People magazine.
"I feel a little lonelier because my kids are grown. I think a lot of women at this age also are going through that, their kids are going to college, their kids are moving on... So thank God for pets," she said.
Anderson's sons, Brandon, 19, and Dylan, 18, come from her first marriage to Tommy Lee. She also tied the knot with Kid Rock and then wed professional poker player Rick Salomon on two separate occasions.
"I've had three marriages, and I would love to be able to be with somebody, and I don't know if that's in my future. I think I look back, and I think I would like to be with somebody again but (I'm) very opinionated and it's a lot to think about now. Who I'm willing to be with, and where that's going - so I think that's part of it.