| Issue | #30 |
| Published | November-December 1956 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Notes | Cover pencils and inks credits from Julius Schwartz's editorial records, provided to the GCD by DC Comics (9 January 2008) |
| Characters | Rex |
| Genre | animal; adventure |
| Pencils | Gil Kane |
| Inks | Gil Kane |
| Notes | Cover pencils and inks credits from Julius Schwartz's editorial records, provided to the GCD by DC Comics (9 January 2008) |
| Synopsis | Queenie the fire dog wont give Rex a second look until he saves the kittens from a big fire. Rex quote: "Oh, Well-You never can tell about women" |
| Genre | animal; adventure |
| Script | Robert Kanigher |
| Pencils | Gil Kane |
| Inks | Bernard Sachs |
| Reprinted | in Century, The 100 Page Comic Monthly (K. G. Murray, 1956 series) #10 |
| Synopsis | Bobo captures a jewel stealing raven and his master. Bobo quote: "Ha! I'm really givin' that guy 'the bird'" |
| Genre | animal; detective |
| Script | John Broome |
| Pencils | Carmine Infantino |
| Inks | Carmine Infantino |
| Reprinted | in Century, The 100 Page Comic Monthly (K. G. Murray, 1956 series) #10 |
| Synopsis | Rex and unnamed reporter fight for their lives while marooned on a south sea island. Rex quote: "-- the scent of evil" |
| Genre | animal; adventure |
| Script | John Broome |
| Pencils | Gil Kane |
| Inks | Bernard Sachs |