They only appear in Jungle Horror!, a book in the Astrosaurs Academy series, in which one attacks Damona, who is saved by Blink, Dutch and Teggs. Commodore Kallos also threatened to let a pack of croco-bears eat the teachers of the Astrosaurs Academy unless Commander Gruff faked a video that announced his retirement to the Savage Safari Park. These animals are often mixed up with the bare croco, a completely different creature.