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  Funny story here regarding this issue...
 In our puppy class we had no small pups, all large ones.  So I decided to socialize my baby with another small breed.  I asked my hairdresser (we are good friends) if she would come over with her 10lb female Pom (she is spayed).  It was the longest hour and a half.  Now at this point Brutus wasn't fixed but had never humped.  He was a humping machine - he warmed right up to her and started going at it.  He humped her head, side, the air - really anything around her.  After that I reseached and found that they will hump to show who is boss.  The whole situation was chaotic, as we were constantly trying to keep them apart.
 
				__________________Brutus is mommas boy!   |