In the city where (almost) anything goes, dogs, cats, hamsters, mice, rats, chinchillas, guinea pigs and other common pets could become contraband.

San Francisco officials are considering a ban on the sale of all pets except fish as a way to curb unwanted animals getting dumped at shelters or euthanized.

San Franciscans who want a pet would have to get one in another city, adopt from a shelter or rescue group, or find one through the classifieds, reported the San Francisco Chronicle .

“People buy small animals all the time as an impulse buy, don’t know what they’re getting into, and the animals end up at the shelter and often are euthanized,” said Sally Stephens, chairwoman of San Francisco’s Commission of Animal Control and Welfare. “That’s what we’d like to stop.”

Final approval of the ban would come from the city’s Board of Supervisors.