Laws on animal welfare haven't changed much since 1911. So the RSPCA have suggested five basic 'freedoms' that should be included in new laws, which MPs will discuss on Tuesday.
At the moment owners can only be taken to court when they are caught being cruel to animals.
But under the new laws, cruelty could be prevented before it gets really bad.
So it means your goldfish could soon be demanding much more than a stone castle to swim around!