I just asked your sight a question last week and they answered it 100% correct. The question last week was her strange sexual behavior with my male. It was becasue she was coming into heat as you Vet said might be happening. My question today is the bitch is now having her 2nd heat and I want to breed her. I own both the bitch and the male. Neither have ever been bred. Should I contain them in an area that they cannot get out of (like a pen). The bitch has been in heat 3 days now. I am new at this so am a little uncertain how to help them breed the safest way for them. Both of the dogs are Yorkies, the bitch weighing app. 7 # the male app3.5#