It's been a trying week for Jessica Simpson, who likens herself to a vigilant mom refusing to give up the fight after witnessing a coyote snatch up her beloved dog on Monday. So far, there have been no sightings of Daisy, the adorable Malti-Poo that has been a constant companion to the singer.

On Wednesday, she blasted critics who say there's no way Daisy could still be alive after three days gone. "Still holding out hope despite the a--holes that say is it a dumb thing to do. Daisy is my baby ... why would I stop searching? I'm a mom," she wrote on Twitter.