| Issue | #27 |
| Published | May-June 1956 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Notes | Cover pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (29 August 2007) |
| Characters | Rex; Danny; a dolphin |
| Genre | animal; adventure |
| Pencils | Gil Kane |
| Inks | Gil Kane |
| Notes | Cover pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (29 August 2007) |
| Genre | animal; adventure |
| Script | Robert Kanigher |
| Pencils | Gil Kane |
| Inks | Bernard Sachs |
| Reprinted | in Superboy Adventure Book 1957-8 (Atlas Publishing & Distributing Co. Ltd. (London), 1958 series) #1 |
| Synopsis | Bobo becomes a traffic cop after finding a whistle in a box of cereal |
| Genre | animal; detective |
| Script | John Broome |
| Pencils | Carmine Infantino |
| Inks | Carmine Infantino |
| Reprinted | in Tarzan (DC, 1972 series) #234 (December 1974-January 1975) |
| Genre | animal; adventure |
| Script | John Broome |
| Pencils | Gil Kane |
| Inks | Bernard Sachs |
| Reprinted | in Superboy Adventure Book 1957-8 (Atlas Publishing & Distributing Co. Ltd. (London), 1958 series) #1 |