Yes
ONLY if they're either two females - or a male * female. Two males housed together WILL fight.
Yes, first see if the two get along, if so than yes they can be housed together.
No. Two totally different species. In fact, the gerbil will kill the mouse. They shouldn't be housed together.
yes
It is a shark and a octopus put together
California Two-Spot Octopus was created in 1949.
no
yes they could
The mimic octopus must be the coolest octopus because it can change shape in two different shapes.
The octopus usually has only one syphon
Two electrons can be housed in the first energy level.
Male geckos will fight till the death if they are housed together, regardless of a female being present or not. Never housed males together as they will fight for dominance and territory.