Eric Jacobson is an American puppeteer who first started working with the Muppets in 1994.
In order to keep the characters of Frank Oz (who was focusing more on directing and other endeavors) alive and visible, Jacobson was selected to take over performing Frank's characters, due to his strong puppeteer talent and extremely similar vocal range.
Since the early 2000s, he was the principal performer of Miss Piggy, Fozzie Bear, Animal and Sam the Eagle. He was also the performer of Piglet in The Book of Pooh.
Outside Disney, he's the current primary performer of Grover and Bert on Sesame Street.
In 2004, he started voicing Toby during the franchise of The Great Mouse Detective.