Hi there.
The benefit of any anchor text is to "tell" search engine bots what that page is exactly about. So, if you have link with "cats" as anchor text, linking to page about persian super white and fluffy cats - there is no much benefit, because Google can understand what pages are about in general without any help from anchor texts. However, if you use "persian super white and fluffy cats" as an anchor text, linking to that page, this is where the difference comes in. Even though google understands that that page is about cats, you might help search engine bots to understand the specifics of that page.
Just do go overboard! Anchor keyword stuffing is as bad (or even worst) as page keyword stuffing.
here is a whiteboard friday on this subject: https://moz.com/blog/all-about-anchor-text-whiteboard-friday

