Search for O Fallon Pet Friendly Apartments, Houses and Condos for rent! O Fallon Apartments and Houses allowing Small Dogs, Large Dogs and Cats Having a hard time finding a rental home in O Fallon, Missouri that will welcome your pets? This page is devoted to rentals in O Fallon, Missouri that are pet friendly. If you have a Small Dog, Large Dog or Cat, you can find a great pet friendly home for them in O Fallon! There is no reason to view hundreds of O Fallon apartments and houses for rent only to find out they don't allow your pet to live with you! Below are all of RentDigs O Fallon pet friendly apartments and hosues for rent. Each one list whether it will allow Small Dogs, Large Dogs or Cats. View information of each O Fallon pet friendly rental to see if it has any additional pet requirements or breed restrictions. There were no pet friendly rentals found for your search.