by Ben
For The Lost World, if you put all "X"s for the DNA Sequence, it will toggle on/off if blood is shown (like when you attack or eat a dinosaur)

by Andrew Fischer
Push these buttons on the controller at the DNA sequence code screen:

Level Selact: XAXYYYYYZXYY
Play as hunter: YYXYZYYYXZXY
Play as Human prey(Female Scientist):YYXYZYYYZXYY
Play as T-Rex: AYYYXYXYYZYY
Play as Raptor: ZXYYYZXYXYXY
See Raptor Galleries: XZXYXYYYZXYY
See Compy Galleries: AYXYXXZXZZYY