It seems like when I have something special I want to grow my dog digs it up. She doesn't dig that often, just when she thinks I'm paying attention to something. My Lemon Thyme, dug up, my Irish eye daisy's - dug up, I moved them, dug up again, now they're out front where she doesn't go. My Oregeno, dug up. Marjoram as well.
Ssshhhh, she hasn't dug anything up this year, maybe she's growing out of it.
Crazy critters. Did you plant some catnip for your cat? Mine love that and wheat grass and I have one that is fascinated with Sage for some reason. Maybe you could plant things to lure the cat away from the Iris'.