The cat, dubbed Mir, was given to Gov. Norihisa Satake by Putin in August and was subjected to the required 120 days of curfew at the airport, RIA Novosti reported Tuesday.
The spokesman said the cat is now living happily at Satake's home.
"Mir is a very beautiful cat. He is marvelous. He's a real presidential cat," the spokesman said.
Putin gave the cat to Satake after the governor gave the Russian leader an Akita Inu puppy during the summer as thanks for his country's help following the Japanese earthquake and tsunami in 2011.