Kenneth Mars (born April 4, 1935 – February 12, 2011) was an American actor and voice actor. He was the voice of Grandpa Longneck from The Land Before Time II: The Great Valley Adventure to The Land Before Time XII: The Great Day of the Flyers. He was also the narrator for The Land Before Time VI: The Secret of Saurus Rock.

For Disney, he voiced the Water Buffalo in Jungle Cubs, King Triton in The Little Mermaid and The Little Mermaid II: Return to the Sea and King Colbert in Thumbelina.

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