Pets ( cats , dogs ) are part of your family , not just a pet !! One needs to take full responsibility of them ( just like your kids ) !! Your friend’s theory of letting them in & out , don’t care if they come home or not , that’s very irresponsible .. these people shouldn’t have pets !! Ultimately , this world isn’t safe , neither for human nor animals , & the animals are vulnerable .. if the person thinks taking care of them is too much responsibility or too expensive … they shouldn’t have any pets !!!! 😡