We have just brought our new pup home(Rico) to meet Kea, She has been ok with the pup except she wont leave him alone, constantly wanting to play and mouthing him(which i kinda expected) but i was'nt prepared for her to be at him all day. Even when he is sleeping Kea is nudging him and barking to wake him up. We have tried putting Kea in the kitchen for 5mins to calm down and allowing her to come back through. We have seperated them by taking one each into separate rooms and playing with them then bringing them back together but Kea still wont leave him for any time at all. Were each taking Kea in the morning for 30mins then twice through the day for an hour to an hour and a half each time to see if this will tyre her out abit and so that Rico can play abit and investigate things for a little on his own but minute Kea comes back in she is straight back to mouthing and nudging Rico. This results in Rico getting really annoyed and growling and bitting Kea. We have read that if your dogs get a grudge with each other when they are really young that this stays with them for ever and we don't want that to happen. Can anyone please help us with this situation and advise us on how to get Kea to play with her brother (Rico) without them fighting and so that they stay best friends forever, and we get a wee rest LOL.