Hippopotamuses are one of the animals that can be unlocked in the Wildlife Sanctuary.
Like all other sanctuary animals, players can only have two of them.
Hippopotamuses have two different appearances: grey and brown.
Unlike other animals, hippos cannot be bought. Players must unlock them by finding puzzle pieces (which are collected in a log book). 36 pieces are required for each animal.
Players must then buy a hippo house to be able to place the animal in the sanctuary. The hippo house costs ? and can be bought from the Shop.
Players may get a hippo for free as they unlock the sanctuary (one animal is given randomly to all players).
When given a wheat bundle hippos seat then roam the sanctuary for ten hours and finally fall asleep. Players can immediately wake them up to receive 25 per animal. Hippos stay asleep otherwise.
Hippos which have been woken up but are not fed for a long while cannot fall asleep and wander around looking sleepy and tired.
Each hippopotamus unlocks specific decorations as listed below:
- The grey hippo unlocks Palm Trees & Aloe Plants.
- The brown hippo unlocks Rock Ponds & Short Bushes.