 "Kitty Kat" received generally favorable reviews from critics. Eb Haynes of AllHipHop described "Kitty Kat" as a seductive track. Norman Mayers of Prefix Magazine wrote that B 'Day is packed with standouts such as "the Rich Harrison-produced' Freakum Dress'and the Neptunes-helmed' Kitty Kat '." Picking out "Kitty Kat" as one of the four top tracks of the album, Spence D of IGN Music added that the song slows things down, allowing for Knowles' "crystal clear vocals to take some down time and relinquish up a dreamy, creamy sound that is playfully sensuous." Andy Kellman of Allmusic described "Kitty Kat" as "a deceptively sweet, rainbow-colored track" where purrs - that are sound made by all species of felids and are a part of cat communication - are more like "claws-out dismissals." Jon Pareles of The New York Times called the song a "cooing [and] sighing" one. Sal Cinquemani of Slant Magazine noted that "Kitty Kat" was "the only mid-tempo break" until the very end of the album. Darryl Sterdan, writing for the Canadian website Jam!, said that the song is just about what you think. Thomas Inskeep of Stylus Magazine commented that "Kitty Kat" seems to be an obvious tracks produced by The Neptunes. He went on complimenting "the squishy R & B keyboard which works well with the song ’ s'I ’ m not feelin [g] it' vibe." A writer of Seattle Post-Intelligencer commented, "Beyoncé is better at being sexy than sarcastic, and 'Kitty Kat' doesn 't make any bones about what her absentee lover is missing." Michael Roberts of New Times Broward-Palm Beach commented that Knowles "purrs at lower speed" in the song.
