I used to think Frala was very much Kibabu's favourite as she had offspring in 1998,1999,2003 and 2007 that I know of.Moulia had two offspring in 2003 and 2008.Kriba had two offspring in 2005 and 2011.Kriba and Frala were actually half sisters and shared the same father,Bongo.
BennettL
You're right, Frala was the first of the three females to breed at Taronga Zoo. She had a male infant in 1998 that lived for 12 days and a stillborn female infant in 1999. Frala was the only female not on contraceptives. Frala was put back on contraceptives in 1999 but her and Mouila were taken off contraceptives in 2002, which led to the births of Fataki and Mbeli in 2003.
Following Frala's births, Kibabu would indeed pay extra attention to Frala and ensure she had space from the rest of the females and their offspring so she and the baby could get the rest they needed. Mouila has always been his favourite however.