People brought to Silver Lake for animal exhibition (9)
I believe the answer is:
Here is my best explanation:
'animal exhibition' is the definition.
(I've seen this before)
'people brought to silver lake' is the subsidiary indication.
'people' becomes 'men' (man is a kind of person).
'brought to' is a charade indicator (letters next to each other).
'silver' becomes 'ag' ('Ag' can be a synonym of 'silver').
'lake' becomes 'erie' (Lake Erie is one of the Canadian/US 'Great Lakes').
'for' is the link.
(Other definitions for menagerie that I've seen before include "Exhibited collection of wild animals", "Collection of wild animals in cages", "lots of animals", "[TENNESSEE WILLIAMS] work in part", "live collection", "Zoo", "where the occupants behave like animals", "Animals go in here", "place to keep animals" and "assembly".)