Jenny
Jenny was a monkey adopted by the Mercer Street fire crew as a mascot. Karl mistook her for an actual member of the crew.
[img]http://www.boweryboyshistory.com/wp-content/uploads/2012/12/jenny.jpg[/img]
http://www.boweryboyshistory.com/2012/12/the-new-york-monkey-fad-of-1907-from.html https://chroniclingamerica.loc.gov/lccn/sn83030214/1907-11-17/ed-1/seq-55/#words=monkey+PET+monkeys+pets+PETS+Monkeys+MONKEY&date1=01%2F01%2F1907&date2=12%2F31%2F1908&searchType=advanced&language=&proxdistance=5&state=New+York&rows=20&ortext=&proxtext=&phrasetext=&andtext=pet+monkey&dateFilterType=range&index=13