MIAMI – Franky the drug dog’s supersensitive nose is at the heart of a question being put to the U.S. Supreme Court: Does a police K-9’s sniff outside a house give officers the right to get a search warrant for illegal drugs, or is the sniff itself an unconstitutional search?

Florida’s highest state court said Franky’s ability to detect marijuana inside a Miami-area house from outside a closed front door crossed the constitutional line. State Attorney General Pam Bondi, an elected Republican, wants the nation’s justices to reverse that ruling.

The difference in the Florida case is that it involved a private residence. The high court has repeatedly emphasized that a home is entitled to greater privacy than cars on the road or a suitcase in an airport.