Oh it's one of my pet (if you'll pardon the pun!) hates. I find it worse with the rabbits, people let their dogs sniff and slobber all over the carrier and they're like "oh he won't hurt them". Um, maybe so, but they don't know that do they. It just makes an already stressful experience even more so. I try and get into the corner so no other animals can get too near but it's easier said than done in a small waiting room! Thank goodness many vets at least have a separate dog ward these days.