You need to work through a really long chain of puzzles starting at 9,14
I just used the bug
I'd already found the chain, but when I got here with two cats, the wormhole opened up, so I mistakenly thought two cats were enough.
Now I've already reached the end of the chain and I'm exploring another place.
And I'm stuck again! (But I want to solve it on my own because it looks so simple)
Some people (like me) like to find the actual solution to puzzles.
Sorry.
Two cats are enough to get the star, but you need three to exit from the top.