| Issue | #15 |
| Published | March-April 1954 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | ? |
| Notes | Indicia says "Published bi-monthly". |
| Characters | Lassie |
| Genre | Animal |
| Pencils | ? (painting) |
| Inks | ? (painting) |
| Colors | ? (painting) |
| Notes | Indicia says "Published bi-monthly". |
| Synopsis | Facts about the toucan, the sloth, the manatee, the rhea, and the armadillo. |
| Genre | Animal |
| Letters | Typeset |
| Notes | Inside front cover. |
| Characters | Lassie; Gerry; Rocky; unnamed pickpocket; Gorey; Diavolo (dog) |
| Synopsis | Gerry, Rocky and Lassie fly to Rio de Janeiro for a Mardi Gras holiday. A pickpocket, cornered by Lassie, gets away with the help of Diavolo. Diavolos's master, Gorey, has plans for a big hotel robbery. |
| Genre | Animal |
| Letters | Typeset |
| Characters | Lassie; Gerry; Rocky; José; Senhor Rohas |
| Synopsis | Back at the homestead Lassie alerts our friends to a cloud of smoke. Using the bulldozer they quickly get to the neighboring estancia which is threatened by a forest fire. |
| Genre | Animal |
| Letters | Typeset |
| Characters | Lassie; Gerry; Rocky; José; Timbu (last of the Taquaris); Pedro (his papagaio) |
| Synopsis | On a hunting trip our friends encounter a young indian, Timbu, sole survivor of the Taquari tribe, and bring him back to the homestead. |
| Genre | Animal |
| Letters | Typeset |
| Notes | Story ends on back cover. Inside back cover in black and white. |