Catalytic Converter damaged?

You'll get a warning light and a P0420 error code if that dent becomes a problem. No need to worry for now. Of course posting a photo of the severity of the dent might change our minds about not needing to worry.

 

The picture is at:

Code:

https://i.imgur.com/QArR52F.jpeg

Imho, it looks like the outer case is still in good shape.
I say, carefully check for any escaping exhaust from the crease. I like to use facial tissue/Kleenex.

Then, keep a watch on it (every 3-6 months?) for any rust or hole.
Also, always stay aware of any new loud exhaust noise.

NOTE: The cat can get to Hundreds+ degrees. If the cat is touched by hand when it is hot, the cat can cause instant permanent burn scars/damage to human flesh. Ouch!
So, please be careful near any hot exhaust component.


Good Luck!

 

That's not the cat. It's just the empty resonator.

 

Now that I can see the picture, it's a pretty severe impact to what looks like the resonator. And while the dent in the resonator won't be too much problem other than slightly changing the sound of your exhaust system, a much great concern is it looks like the force of the impact caused damage elsewhere and you need to get it up in the air for an inspection. For example the two metal bars with the nipples at the ends are suppose to hold some big rubber connectors that hold the exhaust system in place. So at the very least you're gonna have to replace those.