First Gendo is right, this isn't an activated ability but a triggered one (I do think this was more a mistake in the wording you used, rather than a lack of understanding on the abilities, particularly since you had the right word in the question, so I won't address this part any more.
I think you may be thinking about this wrong, It sounds like you're ...
Yes, you get to create a Cat token.
Note that the ability is a triggered ability, not an activated ability. This is an important distinction.
Handling Triggered Abilities
603.1. Triggered abilities have a trigger condition and an effect. They are written as “[When/Whenever/At] [trigger condition or event], [effect]. [Instructions (if any).]”