Not yet, though Bronte did try to trip me once and Kisa jumped on the dining room table while I was trying to clean it (I'm presently wrangling the house back into order).

Actually, Bronte makes a habit out of tripping me. It doesn't matter what I'm doing or where I'm going; she'll dart out of nowhere and run in front of/under my feet. My options are either to step on her, or ... break my neck. :)