I know what you mean when you say they are right underfoot. Yesterday I also almost fell flat of my face when I tripped over Roxey. I didn't even hear her walk up. Everytime after that when I went to turn around she would not "run" to get out of my way, but get out of my way "very quick". And evertime she did this she would give me this look like, "I don't want you stepping on me again!"