Mij was an intelligent animal. It invented a game of his own out of the ping-pong balls. It was able to screw the tap till water began to flow and then it would play and splash underwater. Though it was aloof and indifferent in the beginning, it soon became very friendly and developed a special attachment with Maxwell. It gradually began responding to him when he called Mij. It grew extremely desperate when Maxwell left him in a box and clung to his feet as soon as he came out. Mij was also a fun loving animal who liked to play all kinds of games including toys, ping-pong balls, marbles, rubber fruit and a terrapin shell.