sdzoo:

Curious and cat-like, fossas (pronounced foo-sas) are actually in the mongoose family. Four furry fossa pups are now on exhibit at the San Diego Zoo. 

I was that kid who read ALL OF THE NON-FICTION BOOKS about cats in my elementary school library, and who still gets confused when people can’t pick out the differences between leopards and jaguars, and I had no idea fossas were not actually cats, this is such great knowledge and I am also ashamed of myself.