I don’t remember much about this series except for a few things.
The main hero character was a small, talking, yellow frog-like creature with ears and a nose wearing purple pants who could jump real high anywhere almost like crazy and walk only on 2 legs like a human. And I’m not so sure but I think he lived with a human boy and some scenes took place within air vents most of the time.
I remember one episode where when he found himself in an elephant pen of a zoo with an elephant about to charge at him, he pulled, stretched, and shaped his face to look like a mouse to scare the elephant away.
Another episode had him babysitting another yellow creature of his kind only more mischievous and younger with hair and buckteeth wearing a shirt, glasses, and shoes (probably his nephew or baby brother) and within an air vent, riding a spider.
The rest is blank.