Sorry DVC, but ewe'd better look elsewhere.
Bitches (the real one's) wouldn't be suitable for "lonely nights". They are only receptive for a week or so, every few months, and when copulating, she will clamp down, locking the male's member inside her, involuntarily.
That dog is going nowhere until she cools down a bit.
Speaking of Ewe's: All part of the natural world, but
<<This is not for the faint of heart>>
http://www.google.com/imgres?imgurl=...num=7&ct=image