Not that bad, but it appeals to children by a simple graph animation and a kid with a animal. Although Sarah and Duck is older and has a kid with an animal, I think Peg + Cat is not a copy.
Some pros is that it is educational and is a high quality show. It simplistic animation. The kid and the cat shows how to solve problems, educating children by the teaching skills that the studio produced.
Cons are it's similar to Sarah and Duck but not a copy and the show didn't last for long. Not gonna lie, I wish it lasted for a few years like Nature Cat.
But overall, another gold series by PBS. But, it didn't last that long.
