The gag with the cat, dog, bird, and mouse guzzling down "Jumbo Gro" to get bigger in an arms race of sorts is repeated quite a bit in this little cartoon from Tex Avery, but it also features clever bits of animation. One of the dog's eyes acting as a searchlight, for instance, or the bird rearranging the cat's face on his back before realizing it's scowling at him. Great voices for the dopey cat and streetwise mouse too, the latter of whom we naturally see reading "The Lost Squeek End." I don't read too much into possible Cold War symbolism because the intention seems to be much more about wacky exaggeration than it does political satire, but it was interesting that on the globe at the end, the cat stands over America and the mouse over the Soviet Union.
Review of King-Size Canary
