However, depending on what you're trying to express, you could use these options:
* -like: This creates an adjective comparing something to a cougar, like "cougar-like" or "cougar-like strength".
* -ish: Similar to "-like", this creates an adjective with a slightly less strong comparison, such as "cougar-ish" or "cougar-ish behavior".
* -ism: This is usually used for a doctrine, theory, or movement, and wouldn't be appropriate for a simple description of a cougar.
* -ette: This suffix is often used to denote a smaller version of something, but it wouldn't be suitable for a cougar.
It's important to consider what you're trying to communicate when choosing a suffix. If you can provide more context, I might be able to offer more specific suggestions.