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15 years old (1896) It’s possible to look at Pablo Picasso’s many formal experiments and periodic shifts of style as a kind of self-portraiture, an exercise in shifting consciousness and trying on of new aesthetic identities. Open Culture, openculture.com

From Phaidon's Andy Warhol Catalogue Raisonné Collection, here are 10 of our favorite pet portraits from the famed pop artist.

25 Cats Name(d) Sam and one Blue Pussy