You don’t need special materials to make breathtaking, realistic art. At least, you don’t if you’re as talented as French photographer and illustrator Sarah Esteje, who often uses nothing more than a Bic pen to create stunning work. A perusal of her Tumblr — which we highly recommend — yields everything from a precise, hand-drawn recreation of David Bowie’s Aladdin Sane album cover to a photorealistic rendering of raw bacon. But it’s Esteje’s painstakingly detailed Bic portraits of animals, which we spotted via Colossal, that we can’t stop gawking at. Lifelike, shrieking monkeys, solemn hounds, and roaring bears await you after the jump.