2 ▁years ▁of ▁age , ▁and ▁will ▁start ▁having ▁cal ves ▁every ▁five ▁to ▁eight ▁years , ▁aver aging ▁about ▁ 4 ▁to ▁ 5 ▁cal ves ▁in ▁a ▁lifetime . ▁A ▁cal f ▁will ▁su ck le ▁its ▁mother ▁for ▁a ▁minimum ▁of ▁two ▁years , ▁with ▁most ▁continu ing ▁to ▁su ck le ▁for ▁five ▁years , ▁and ▁some ▁evidence ▁suggests ▁that ▁females ▁may ▁continue ▁to ▁la ct ate ▁for ▁up ▁to ▁ 1 5 ▁years ▁after ▁the ▁birth ▁of ▁their ▁last ▁cal f . ▁A ▁female ▁will ▁usually ▁stop ▁reprodu cing ▁once ▁reaching ▁the ▁age ▁of ▁ 4 0 ▁years , ▁even ▁though ▁the ▁maximum ▁lif es pan ▁exceed s ▁ 6 0 ▁years . ▁ ▁For aging ▁ ▁The ▁di et ▁prefer ences ▁and ▁for aging ▁hab its ▁of ▁short - f inned ▁pilot ▁wh ales ▁are ▁still ▁poor ly ▁understood , ▁however , ▁they ▁are ▁known ▁to ▁be ▁deep - d ivers , ▁and ▁are ▁generally ▁found ▁for aging ▁on ▁the ▁ste ep ▁s lop es ▁along ▁the ▁contin ental ▁sh elf ▁break . ▁ ▁Their ▁di et ▁is ▁thought ▁to ▁consist ▁primarily ▁on ▁squ id , ▁but ▁will ▁also ▁include ▁certain ▁species ▁of ▁fish ▁and ▁oct opus . ▁They ▁have ▁been ▁recorded ▁to ▁feed ▁at ▁a ▁maximum ▁depth ▁of ▁ 1 0 1 8   m ▁( 3 3 4 0   ft ) ▁for ▁a ▁length ▁of ▁ 2 1 ▁minutes , ▁although ▁average ▁div es ▁tend ▁to ▁be ▁shall ower ▁( around ▁ 7 0