Hope all of you guys are doing well. My wife and I are thinking of adding our 2nd cat to our home. Am I concerned? Yep. We have a British 'Blue' Shorthair and he is about 2 1/2 years old. Seems to be very territorial as when he see other cats outside walk by the sliding glass door he is ready to rumble. Looking at a female Scottish Straight. Temperaments and personalities should be close I think. I'm currently researching the introduction process etc. he is neutered also. He seems content with being the only pet in our home but we love him so much we want 2. My question is, how many of you guys have had a 2 1/2 year old male alone, and kind of territorial, but, added a female and it went smoothly. Thanks