Smart animal spies

I enjoy many science fiction and fantasy books, ever since I could read chapter books. The idea of animals as spies isn’t new as many magical and non magical animals are part of many plots as spies in these books. 

I thought it was mostly fiction until I saw this article! What did you think? 

To read article: Cats, dolphins and one smart raven: the CIA's secret animal spies

This cat learned to fetch by watching her doggy housemate!
Topaz, Fetching Cat, 6 by 6 inches, acrylics on wood panel, commissioned pet painting