▁with ▁the ▁she - go at ▁than ▁the ▁sheep ▁with ▁the ▁he - go at . ▁The ▁well - known ▁' p ell ones ' ▁of ▁Chile ▁are ▁produced ▁by ▁the ▁second ▁and ▁third ▁generation ▁of ▁such ▁hy br ids ▁( G ay , ▁' H ist , ▁de ▁Chile ,' ▁vol . ▁i . ▁p . ▁ 4 6 6 , ▁Agricult ure , ▁ 1 8 6 2 ). ▁Hy br ids ▁b red ▁from ▁go at ▁and ▁sheep ▁are ▁called ▁' ch ab in ' ▁in ▁French , ▁and ▁' c ab run o ' ▁in ▁Spanish . ▁In ▁Chile ▁such ▁hy br ids ▁are ▁called ▁' car ner os ▁lan ud os '; ▁their ▁bre eding ▁inter ▁se ▁appears ▁to ▁be ▁not ▁always ▁successful , ▁and ▁often ▁the ▁original ▁cross ▁has ▁to ▁be ▁recom men ced ▁to ▁obtain ▁the ▁proportion ▁of ▁three - e ighth s ▁of ▁he - go at ▁and ▁five - e ighth s ▁of ▁sheep , ▁or ▁of ▁three - e ighth s ▁of ▁ram ▁and ▁five - e ighth s ▁of ▁she - go at ; ▁such ▁being ▁the ▁re put ed ▁best ▁hy br ids ." ▁ ▁Supp osed ly , ▁most ▁sheep – go at ▁hy br ids ▁die ▁as ▁emb ry os . ▁Hy brid ▁male ▁m amm als ▁are ▁often ▁ster ile , ▁demonstr ating ▁a ▁phenomen on ▁known ▁as ▁H ald ane ' s ▁rule . ▁The ▁H ald ane ▁phenomen on ▁may ▁apply ▁even ▁when ▁the ▁parent ▁species