I agree with Aly about cats being easier to care for. I would expect Kylie to hide a little at first. Hopefully she'll find a safe haven under a bed or somewhere up high to get away, if and when the chasing starts. (There's bound to be a little in the beginning). Gradually she'll feel a little more comfortable and come out more often. Trevor and Andy were used to dogs but it had been 3 years when we adopted Bella. They hid for a week! I really didn't expect that and it scared me a little at first. I thought "what have I done?" Fortunately it has all worked out beautifully now. Also supervise them when they are together and separate them when you're not home. Another big thing....tah dah!....keeping Shai away from the litter box. Unfortunately sometimes dogs have a hard time staying away from the "tootsie rolls" in the litter box (sorry it is gross, but true!) My kitties' boxes are in the basement and they have a flap door to go through which Bella could never fit through in 1,000,000 years!