[1] Eric Praline (John Cleese) is a put-upon customer who seeks to obtain a licence for his pet halibut, Eric, although he has difficulty explaining to the clerk (Michael Palin) how all pets should be licensed.
[3] Praline even produces "a dog licence with the word 'dog' crossed out and 'cat' written in crayon", and explains that the man in the "Ministry of Housinge" cat detector van (a parody of the TV detector van) didn't have the right form.
The superhumanly tall Lord Mayor (Graham Chapman), with full regalia and city council entourage, enters the office and hands a thunderstuck Praline the signed statement.
An announcer (also Cleese) reverently narrates the exchange, ending by saying that Praline has "gone spare".
[3] The sketch then segues to the Lord Mayor and city council members playing a rugby match against the New Zealand All Blacks.