As previously noted here, good U.S. distribution for an independent animated feature is very tricky thing to acquire. Nina Paley went the self-distribution route with her film Sita Sings The Blues, while smaller companies like Regent ($9.99), IFC (Mary & Max), Zeitgeist Films (A Town Called Panic), and Gkids (The Secret of Kells) try their best to introduce animated films into the competitive marketplace.
That said, I can report some good news for Paul Fierlinger’s My Dog Tulip. The film has been picked up by Apparition, a fairly new theatrical distributor out of NYC specializing in independent films for the U.S. market. They take on only about 7 films a year and, based on some of their live action acquistions (Terrence Malick’s The Tree of Hope and Jane Campion’s Bright Star), have gained a solid reputation.