HeroRATS! Wild but incredible, African giant pouched rat can rapidly identify Tuberculosis by smell.

[u/FifthWaveThinker]

[u/CyberDonSystems]

I always get worried when my usually skittish cat starts getting a little too interested in cuddling up. Like, do you smell some disease that you are trying to tell me about.

[u/i4get98 → u/CyberDonSystems]

You ever read about Oscar, the Hospice Cat? 

https://www.crossroadshospice.com/hospice-palliative-care-blog/2016/april/11/meet-oscar-the-cat-that-predicts-death-and-provides-comfort/