The Cat from Outer Space (1978) on Netflix

A UFO lands on Earth, it's inhabitant is a cat. When the craft is found by the military, it is brought to a scientific institute. The cat follows and listens to all the scientists give their take on it but so far no one has anything useful to say. But one of the scientists suggest they bring in Frank Wilson whose a bit unusual. The military thinks his theory is off base but the cat is intrigued so he follows him and reveals that he can communicate via the collar he has. The cat whom Frank dubs as Jake tells him his spaceship is damaged and needs his help to repair it. Eventually they learn that they need 120,000 dollars worth of gold to repair his ship, so they try to find a way to get it. At the same time a man at the institute who is actually a spy learns about Jake's collar and reports it to his boss who wants it.