Sheesh, we've moved twice and never been asked to do that and, no, we've never had any difficulties. I wouldn't do it personally. You're probably doing the right thing with the dog, although we looked at houses with dogs and weren't put off. Some people may be though.
I'd just remove clutter, make beds etc, but you probably already do that. Any viewers may be glad to see a kettle, especially if it's recently boiled and accompanied by a couple of a mugs.
Just remembered that we viewed one house which was absolutely pristine, plastic runners on the carpet and we were asked to walk only on them, plastic covers on the furniture etc, basically no signs of normal life at all, apart from the lady who followed us closely to make sure we didn't touch anything (we are quite clean people, but can't guarantee to be absolutely germ free) ... we didn't buy it!