well I am just taking a shoot in the dark here but I do not think that you would want to keep a lobster as a pet I mean I would not but I think you could just keep any lobster as a pet as long as it...
i have my pet duck inside at night, but during the day time he goes outside to play and frollick in his pool. he is inside of a big gigantic rubbermaid tub, but most people put diapers on their ducks...