on the bum! It bloody hurts. Was babysitting for my friends child and my dogs (loofa) Mum was there, went to put my coffee cup in the kitchen where she is with her puppies, my back was turned and she launched herself out the pen as I passed and nipped me on the bum.
I roared at her to get back to bed and she did, carried on putting my cup away and walked past her again back into the lounge.
Got such a fright - told them when they got back and they were v apologetic. I have never been frightened of a dog in my life, but I am so wary of her now. 
Understand she is whelping, it is just hormones and not normally like this.
Just posting as I got a fright. And now have a nice bruise on my arse.
PS I dont normally roar at my or anyone elses dogs.