According to Wikipedia, Yuri Valentinovich Knorozov, the person who decoded the Mayan script
...listed his cat Asya as a co-author on his work, but the editors always removed her. He always used the photo with Asya ... as his author photo, and got annoyed when editors cropped her out.
I gather that this wasn't a joke: he considered that he had learned something vital to his research, something to do with communication, by observing her teaching her kitten to hunt. I've searched on various combinations of words, and found a number of articles, mostly from cat lovers, but I still don't know what he learned.
I found the claim about the cat, and the cat's name, in the article Man Credited Siamese Cat with Helping Him Decipher Maya Script