Thurl Arthur Ravenscroft (pronounced /ˈθɜrl ˈreɪvənzkrɒft/; February 6, 1914 – May 22, 2005) was an American voice actor and singer known for his deep, booming voice. For 53 years, he was best-known as the voice of Tony the Tiger in more than 500 television commercials for Kellogg's Frosted Flakes.
Ravenscroft was the uncredited vocalist of the song "You're a Mean One, Mr. Grinch" in the Christmas television special based on the Dr. Seuss classic How the Grinch Stole Christmas! His name was accidentally left out of the credits, however, leading many to believe (erroneously) that the cartoon's narrator, Boris Karloff, sang the song. Ravenscroft also sang "No Dogs Allowed" in the Peanuts animated motion picture Snoopy, Come Home and I Was a Teenaged Brain Surgeon for Spike Jones.