Image credit here. Note that I could not find an image of the original. But as it turns out, there are a number of sites where you can purchase a reproduction of famous art; this is one of those sites.
Young Man with a Cat (or Portrait of a Man with a Cat), Frans Hals, 1635, Oil on canvas, 17" x 17", held by Gemaldegalerie Alte Meister, Kassel, Germany.
Zuffi tells us:
The young man with the wispy moustache and crude hairstyle gives us a knowing look while trying to soothe, with practiced caresses, a rather too lively kitten.
Looks like the kitty got into some lipstick. Not sure if it's really her color.