The only cats I have are the ones at my parents house (family pets) which I visit weekly. I move in with FI when we get married in 12 days. We want to get 2 cats...BUT...there is a doggy door which cats quickly learn how to use. Any suggestions on how to keep them from jumping over the back fence? Its a 6 foot brick wall. If we cant find a solution then I cant have kitties

ETA: I just realized its actually 11 days