Passage to Moauv Summary . As Captain Kirk attempts to record his captain ' s log , he is constantly interrupted by the ambassador ' s waul , wailing and meowing like a cat . With the help of Yeoman Prentiss , Dr . McCoy takes the animal down to sickbay to house it with the experimental animals . The " Enterprise " is two standard week s and six and a half hour s from the planet of Moauv , a neutral world near both the Federation and Klingon Empire . Spock notes that the Moauvians are an advanced and logic al people . As Spock and Kirk discuss affection for animals , McCoy radios the bridge to inform Kirk that the waul has escaped , and that they cannot find it . He also reports that Prentiss ' arm is bleeding . Kirk delegates Spock to take a security team to look for it , seals off the decks above and below sickbay , and uses the intercom to inform the crew of what has happened . Spock meets up with Prentiss and McCoy , and as they describe the situation to him , he meows in response , but thinks that they are joking when they mention it . As Spock directs the security team , both McCoy and Prentiss also begin making cat - like noises and snarls . On the bridge , Uhura tells Kirk that she is getting reports of fights breaking out on sickbay level , and that she is also hearing cat - like sounds . Kirk tells Uhura to locate Spock , just as Spock enters the bridge , covered in scratches and with his uniform shirt torn to shreds . Spock tells him that they had the animal cornered and he suddenly felt a sense of fear , and not a logical fear . The security officers with him were reacting in a similar manner . Spock surmises that the waul is projecting a telepathic field that is causing panic , fear , and the cat - like noises to be made . Kirk contacts the ambassador , Oavid , to report that his pet , Ewass , is loose and causing trouble . Oavid tells Kirk that he will be filing a formal protest , but tells them that the more frightened Ewass becomes , the more difficult it will be to approach him . He recommends shooting the animal with tranquilizers from a distance , but the " Enterprise " does not have the necessary drugs on hand . Kirk and Spock head back toward the creature with a net , but as they approach it , they are both overcome by panic and fear . Spock attacks Kirk , stopping when Lieutenant M ' Ress approaches them . M ' Ress , apparently unaffected by the telepathy , approaches the waul . As she does , the panic and fear subsides . The creature seems to have taken to the lieutenant and begins purring happily . Spock deduces that it is because M ' Ress is also of feline ancestry and can empathize with the animal . Kirk relieves her of her communications duties for the remainder of the trip and delegates her as the caretaker for the waul . On the bridge , Kirk contacts Oavid again , informing him that they have managed to calm the animal . Oavid thanks them and asks them to be gentle with Ewass over the remainder of the voyage as Ewass is pregnant , and they can expect six to ten baby wauls before they arrive at Moauv . Kirk tells Spock to inform M ' Ress that she is about to become a mother shortly and to inform McCoy to prepare for the impending births . Memorable quotes . " " I confess , Captain , that for a change I find myself empathizing with Dr . McCoy . This is a considerable disappointment . " " " " For me too , Spock . " " " " Mr . Spock . . . you all right ? " " " " Yes , Captain . I must report myself under arrest for assaulting . . . " " " " No , Spock . You had no control over your thoughts . " "