Usually the rare animal, Ichabod Crane, will follow food schedule D, so 96,600 apples, and Farmers Otter will follow food schedule E, or 138,325 apples for a total 234,985. However you only need to feed the Farmers Otter to level 14 so subtract 30,000 for a total of 204,985 apples. Plus what
other apples the SB requires, like feeding Honey Bear to level 4 for example so you can breed it.