After asking If I lived in space, could I have a dolphin for a pet? and doing some research for an answer to Can fish really live in microgravity without water?, it seems like one of the key points to have a dolphin in space would be litter box training.
So is there research or indication that indicates a dolphin can be trained where to perform toilet functions?
Edit to clarify The main considerations here.
- Are dolphins trainable?
- Do dolphins have voluntary control of the bowel and bladder?
Horse for example like many grazing animals have little voluntary control over their bowels, so while highly trainable, reliable house training is not practical.