Add Different News Feed/RSS To Each Post

I have a blog that has hundreds of different topics. I’d like to embed an RSS feed from Google News related to each topic, i.e. on the post about Lion’s, I’d like to display a news feed from Google News about lion news and on the post about Zebra’s, I’d like to do the same but with news about Zebra’s.

Any suggestions … I keep trying different RSS plugins that work fine if I add it to the single.php template but that makes the same feed for every post and I need different feeds on every post.