This post brings back memories of my dog amber when she had her first season,she became
Really withdrawn and behaved very oddly I remember feeling quite sorry for her when she was sat
Staring into space and I got down on the floor next to her and went to stroke her she went for my hand
And nearly bit me , I was really upset and shocked but I guess she just wanted to be left alone ?.
Another dog ,a different time last year came hurtling over the park and attacted amber , her owner said that she thought it was because her dog was on heat !
Hope this helps ,maybe some dogs do react differently to others when on heat .