So in terms of animals, how many would Dubbo and WORZ be able to hold? 9-12?
It depends how many hippopotami can be held in a cohesive group. The simplest formula is to retain daughters from the breeding female in their natal pod. This works especially when the previous offspring are not full grown themselves when the introduction of their younger sibling takes place.
Though hippos as young as two have killed their newborn siblings, the mother is usually able to protect her calf from any aggression from older siblings. Using this method, Dubbo have achieved a pod size of four - with the youngest calf (a bull) transferring out shortly.
Like I say, it’s difficult to put a number on what they would achieve, but one example is:
Werribee: Group One: Primrose (1990) and Tulip (2003); Group Two: Breeding bull; Group Three: Lotus (2008) and up to two offspring.
Dubbo: Group One: Cuddles (2002), Kibibi (2014) and Kendi (2017); Group Two: Nile (1999); Group Three: Breeding bull - with either Cuddles or Nile breeding.
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