Health problems or rex rat?

Ive bought two ten week old rats,one black hooded and one agouti. the agouti has fluffy,course fur that does not lie flat, and bent whiskers. could he be a rex or is there a problem?
Answer
Not to worry, you have purchased a rex agouti. the curly whiskers are the clue that his type is rex. http://www.afrma.org/rexrat.htm spazrats "my life has gone to the rats"