Ok, I know this is heartbreaking news for you but think about it this way, if he doesn't like dogs then he would not have been happy at your house. That would have upset you to see him scared all the time. Trust me when I say that you really don't want to deal with those issues if your dad is iffy anyway. What this means is there is another kitty somewhere who belongs with you and with your other animals. I know you had your heart set on Peter but it must not have been meant to be.
Don't stop looking and I promise you that one day when you are snuggling with just the right kitty that you will be thankful that it all worked out the way it did.
The right kitty is out there and unfortunately you will have to be just a little more patient. I'm sorry you won't be getting Peter but please don't give up, ok? There are so many shelter kitties that need you and the right one is just waiting to come live with you.
It will all work out for the best in the end. I PROMISE!! God has a way of doing that you know?