Philadelphia-based photographer and self-described “crazy cat man” Andrew Marttila specializes in capturing beautifully expressive portraits of adorable felines. His latest work includes a series of macro shots that zoom in on cats' eyes, showing every minute detail of the creature's colorful iris and slitted pupil. Ranging in hue from mottled gold to ice blue to emerald green, each cat's eye is a mesmerizing reflection of the fierce and magnetic personalities of our feline overlords.

Despite being allergic to cats and dogs since birth, Marttila decided to overcome his allergy at the age of 22 by building up an immunity through exposure to larger animals. Since then, his love and adoration for furry friends has led to a career as a pet photographer. Although he's only been taking pictures for a few years, Marttila has already been able to do photo shoots with celebrity cats like Lil Bub, Pudge, and Grumpy Cat. When he's not working with clients, he's busy photographing his own sweet Bengal cat, Haroun, who has become a star in his own right thanks to Marttila's popular Instagram feed.

Above: Oberon

Husker

Haroun

Jinx

Imogen the Kitten

Kip

Lady

Benedict

Hobbes

Ahava

Shoyu

Aja

Squeak

Andrew Marttila: Website | Facebook | Instagram

My Modern Met granted permission to use photos by Andrew Marttila.