Monkey
Bird
Lion
Giraffe
Elephant
Snake
Koala
penguines
bird, snake, elephant, giraffe, monkey, lion, koala
For most of the people this will be an option but I had the same problem, I think it's a glitch. I had to go to extreme measures and get their current roomate to move in with me and then invite your perfered roomate in directly after kicking the other one out.
The would depend on the animal.
Australian female citizen marrying US male citizen - which would be easiest marrying in US and come back to Australia to live or marry in Australia to live?
Spiders.
It would be found in the animal kingdom
No, because all of the animals live around you and you play as a human. But, that would be cool if they could.
Humans.
a dog
a fox
circus or a place were the animals can live in peace