She had work on display at the National Arts Club, collaborating on pieces that were shown with human artists such as Tom Sachs and Dirk Westphal.

A 16-pound (7.25 kg) Jack Russell terrier with a white coat and brown and black markings on her face, she was named for Tillamook Cheddar, a brand of cheese produced in the U.S. state of Oregon.

She lived in the Clinton Hill neighborhood of Brooklyn, New York, with her owner, F. Bowman Hastie III, a freelance writer and editor.

[citation needed] Tillamook Cheddar has appeared on CNN Sunday Morning, with hosts Anderson Cooper and Catherine Callaway (September 29, 2002).

[6] On November 30, 2006, Tillamook Cheddar (presented as "Tillie the Canine Artist") appeared as a featured guest on Late Night with Conan O'Brien.