Pooch the Pup was an evolution of Oswald the Lucky Rabbit. After Universal Studios essentially stole the character from Disney, the new and much more bland character went through many changes. At first, he looked a lot like the Oswald of old but then the animation got better...and the stories MUCH blander and saccharine. When this killed off the series, Universal hadn't learned their lesson and instead of making the character and cartoons sillier and more chaotic, they just redrew Oswald and made him Pooch the Pup! If you look at a picture of Oswald circa 1932 and Pooch only a year later, you can easily see the similarity.
In this installment, Pooch is there to capitalize on the popularity of RKO's big hit, "King Kong". So this finds Pooch going on safari to find a giant ape living along side dinosaurs. In addition to these characters, there are lots of locals....who are drawn in a manner that would be seen as VERY offensive today. But no need to worry too much...as practically no one gets to see Pooch today. This is NOT a bad thing but if you insist, you can find his cartoons on YouTube like I did.
Now I am not saying this is a terrible film provided you can look past the racist drawings. The animation quality is good and the story fortunately lacks the saccharinely cute characters found in many of these Walter Lantz cartoons. Not terrible...which is high praise indeed for a Lantz cartoon.