Can you hellp me ID these characters?

[tuneler]

There were 2 or 3 muppets that had HUGE mouths that would look at something and say something like yawp, yawp, yawp in an increasing frequency as if agreeing with one another. I've looked at a few websites and can't find an ID anywhere. I suppose it was a non-speaking part although they did vocalize.

 

[Oscarfan]

You're most likely referring to the Martians on Sesame Street.

 

[Gelfling Girl]

Yip Yips, to be exact.

 

[tuneler]

Thank you for your help

I appreciate your help. Why don't these ever show up on muppet websites? They were as good as most others.

 

[The Count]

Not sure which sites you visited, but perhaps you should head over to the Muppet Wiki as they have an article on almost everything Muppet-related there.