Neera Tanden, Lew Anselem, and Jake Sullivan all seem to be interested in rabbits:

https://wikileaks.org/clinton-emails/emailid/7431

https://wikileaks.org/clinton-emails/emailid/14333

https://wikileaks.org/clinton-emails/emailid/23003

Other leaked emails w/"rabbit":

https://wikileaks.org/clinton-emails/?q=rabbit&mfrom=&mto=&title=&notitle=&date_from=&date_to=&nofrom=&noto=&count=50&sort=0#searchresult