Report Abuse. There is no age restriction but pet shop owners are usually very responsible people and will not sell a puppy or a kitten or anything else to an unaccompanied child.
When the price goes up, naturalization rates go down. The current filing fee for Form N-400, the Application for Naturalization, with U.S. Citizenship and Immigration Services, for adult applicants is $680 ($595 plus an $85 biometric fee). This is certainly a prohibitive cost for individuals living below the poverty level.
How much does it cost to apply for the U.S. Citizenship test? There are three cases, as described below. If you are: Under 75 years old: The filing fee alone is $595, plus biometrics fee of $80. That makes it $675 total just to apply. 75 or older: You will pay just the filing fee, no biometrics. That makes it $595. A U.S. military member: Free! (Section 328 and 329 of the INA)