They probably either had more than one puppet, or the intros were done in the UK.
I remember seeing a picture of the Aveune Q puppets and how there's 3 of the same character. Usually I always thought they just build the one character per year and then rebuild the character and dump the old one or something like that.
I wonder how they do things in terms of how many puppets they need per show. The writers right the script and contact the workshop to build the characters, whatnots, stock puppets and they somehow ship the puppets either by truck or if in another state, air mail or something like that? From my knowledge I remember hearing how The Muppet Show was done in a week per episode but I wonder if that's the whole show from pre-production (writing, lists, production notes), production, and post-production (editing, music dubs, opening, closing, sound effects, final master tapes etc) or if the week was just production. And the season was done in bulk right so it's not like they rushed to get a new show on the air kind of like how South Park gets a whole show done in 6 days or Spitting Image in a simular fashion relating to puppetry? It usually takes a puppet builder about a month or two to build a quality puppet right? All this is so fascinating to me lol Especially Muppets Tonight because I grew up watching that show when it was on ABC and I specially ordered Disney Channel mainly because of it and to see the unaired Season 2 episodes which from what I remember sat on the ABC's shelf for a long while until Disney picked it up.