I don't believe in outside cats. Letting your cat roam around outside could shorten it's life span. A number of things could happen. It can get attacked by another animal and either die or contract a nasty disease, someone could kill it either my accident (with their car) or on purpose (there are psychos who love torturing cats), and other ways. It would be best to keep the cat on a screened in porch and slowly introduce it to being inside the house more.