Couple of very healthy chinchillas there.
We have a holland lop bunny that's about 3 years old. He's got a huge pen, but also has a 'front yard' (linoleum down on the carpet and a 4 foot tall enclosure attached to his 'cage'. He's litterbox trained (pellet litter not cat litter). He can roam the downstairs (cats are upstairs) at times and always goes back to his pen for pottying. Very quiet and relaxed critter. Alot of people keep rabbits in apartments like you would a cat.