My lab bitch is on day 15 of season and I have put her to the stud dog on days 11, 13 and 14. She won't let him mount her effectively and yelps when he tries to get 'it on' (so to speak!). I have now taken the bold step of taking stud dog home with me and they are together but he is not showing any interest in her now - other than the odd lick. She on the other hand is now following him around and looking forelorn as he is ignoring her advances! Am not sure if she still isn't ready and would be keen to hear of anyone who has had successful matings from day 15 onwards. She certainly was not seeming ready before, but he was! (PS. am doing this all responsibly - ie. KC reg, hip,eye,elbow scores etc - but she is a maiden bitch although the stud is proven).