My dog met a little friend for himself, and through his actions he seemed confused in what to do. He examined this little dog, and when his curiosity had been satisfied and he discovered she was a female, he attempted intercourse. The female seemed to welcome this to such a large degree that the female's vagina opened up to such a large size that she appeared to no longer be a small dog. My dog, realizing this, was frightened and slinked away with his tail between his legs.