Octopuses

Octopi have appeared in several Muppet productions.

The Muppet Show

 * Episode 505: James Coburn - three octopi are attacked by Animal
 * Episode 416: Jonathan Winters - and octopus attacks Bear on Patrol

Elsewhere

 * Otto the Octopus in Muppet Sing Alongs: It's Not Easy Being Green
 * The cover of The Sesame Street Treasury Volume 9
 * An octopus sings "Octopus Blues" on Born to Add