I was once with a girlfriend when I was still in my parents' place. One of the dogs nudge the door open...when I saw her, she seemed to have a "What in the flying fuck are you doing!!??!!" look in her eyes.
Then she started licking herself, then walked away so she could bark at a chipmunk.
Yeah, but only to make him jealous. He's been neutered, there are no other female dogs nearby, and all he gets to hump are the pillows on my couch. So when he eats my socks or shits in the living room, I like to rub in his face the fact that I can have sex and he can't.
My ex had a dog that used to push open the bedroom door, walk in, and push its muzzle into the sheets while we were doing it. Then she'd start laughing, and that was it. My honey jar was empty.
Year's ago a co-worker told me she was having sex (in presumably missionary position) when her cat came to her rescue by jumping on her boyfriend's back and sinking in all four sets of claws. She figured her not being able to stop laughing about it probably contributed to their breakup.
My Boston was actually laying under my leg as I was going to town on my girl last night...it's weird but he's always up on the bed while i'm taking care of business