Which French artist painted Don Juan with a black doggie?

Here are some clues:

1. Picasso made fun of this artist yet owned some of his work.

2. He was a self-taught “primitive” painter who worked as a customs officer.

3. He painted tropical scenes with animals.

Answer: Henri Rousseau, “Le Petit Chavalier (Don Juan).” 1880, oil on canvas.

Image Source: https://commons.m.wikimedia.org/wiki/File:Henri_Rousseau_-_Le_Petit_Chevalier_(Don_Juan).jpg