I confess, me too, Janie!
Sarah, my dog (was the only dog at the time) stayed extra close to me before labour started and was very sensitive to me when labour began - he would just be there and sidle up to me, looking into my eyes to make sure that all was normal. My goodness, I'll never forget that! Even now, when he's being painful (he's huge and takes up so much space when he's inside), I give him a pat and remember how good he is to me
Oh, my horse, too, seemed to know that I was in an altered state. I didn't see him after about 37 weeks, but up until that time he wasn't belligerent with me and was sure to walk slowly next to me instead of pulling on the leadrope. Also, I rode until about 27 weeks and he just knew - seemed to know that I didn't have the abdominal power to urge him forward, so there was never any danger of going too fast or doing anything too energetic on him (I would have pulled a ligament trying to get him to jump a log, I think!).
It's nice - I loved that feeling of being on the same, instinctual, mammalian level as my animal friends.