Before we get to Keith Hernandez and what a former sports star is to do after the glory of the field and, of course, the viral videos of his cat on social media, consider a few things.

Hernandez, a first baseman, accomplished a lot on the baseball diamond: two World Series rings (with the St. Louis Cardinals in 1982 and with the Mets in 1986), a Most Valuable Player Award in 1979 and other accolades. He has grown into a respected, amusing analyst of the team for broadcasts of their games on SportsNet New York. And, at 64, he has followed so many of his brethren into the book world, with a memoir coming out next week.

But lately people really want to know about the cat. His name is Hadji, named after the character from the 1960s animated television show “Jonny Quest.” He lives a great life and Hernandez has gained many followers on Twitter by posting about it.