Chuck Jones is widely considered one of animation's finest directors/animators and for very good reason. When he was at his best, his cartoons were masterpieces of animation, comic timing, characterisation and wit.
The Sniffles cartoon series were very early efforts for Jones, and, while they are interesting from a historical perspective, it is safe to say that from personal opinion they really don't see him at his best. There is somewhat of a still finding his feet feel here, with the humour once he became a regular director for the Looney Tunes/Merrie Melodies cartoons becoming much funnier, more constant and wittier and the characterisation far more interesting.
As far as the Sniffles cartoons go, 'Toy Trouble' is one of the better ones. It is predictable in terms of story, with it not being hard to figure who will get the upper hand, and has moments where it's a little too saccharine, a tendency with the Sniffles cartoons.
On the other hand, 'Toy Trouble's' animation is very good. It is lush and vibrant in colour and meticulous and beautifully drawn in detail. The character designs are fluid, well drawn and distinctive Jones, if not the creative ones of his very best cartoons. Carl Stalling's music is lush and characterful, with clever orchestration and a mastery of not just adding to the action but enhancing it as well (Stalling was a near-unequalled master at this, though Scott Bradley gave him a run for his money).
'Toy Trouble' is likable and fun enough and Sniffles is more compelling here with a well-meaning personality while making mistakes. The bookworm is appealing and the cat is an amusing and crafty foe.
In conclusion, very nice Sniffles cartoon. 8/10 Bethany Cox