DePatie-Freleng tried to expand their line of comedy shorts beyond The Pink Panther, Ant & The Aardvark, & The Inspector, at the end of the 60's. However, Roland & Rattfink, a human-centric riff on the adversarial conflicts of, say, Tom & Jerry or even the Panther himself and the Little Man, didn't really catch on, with 17 shorts produced between December 1968 and April 1971.
For all but one of these shorts, the vocal effects were performed by Len Weinrib. In "Hurts & Flowers", which carries a 1968 copyright but was released in February 1969, Rattfink tries to spoil Roland's good times, which pacifist Roland always responds with a simple daisy.
Roland & Rattfink, according to at least Wikipedia, had appeared on one of the Panther's NBC shows, but I cannot confirm that, as I don't recall seeing these two on TV. This was DFE's way of reaching out to the huppie culture of the period, which unfortunately, based on the low output, tuned them out.