Based on the search results, there is no clear definition or explanation of what a "bravo cat" is. However, there are a few references to "Growl Tiger the Bravo Cat" in T.S. Elliots poem "Growltigers Last Stand" and in Andrew Lloyd Webbers musical "Cats". Growl Tiger is described as a large and fearsome cat who lived on a barge and terrorized the inhabitants along the Thames river. Additionally, there is a social media account on Instagram with the handle "catiebravo". There is also a US manufacturer of pet food products and treats called Bravo! , and a tribute and epilogue to a kitten named Bravo who was saved after being set on fire. However, none of these references provide a clear definition or explanation of what a "bravo cat" is.