The high shear rates innate to the flow fields near a moving contact line suggest that non-Newtonian behavior in a fluid should impact its dynamic wetting behavior. We compare the dynamic wetting behavior of an elastic Boger fluid with its Newtonian base fluid to probe the impact of slow (on the order of seconds) relaxation modes on dynamic wetting as the air entrainment limit is approached and the Weissenberg number is of order one. (C) 2009 Elsevier Inc. All rights reserved.