a dog there is nothing like coming home to a happy tail wagging dog who is excited you walked in the door. save one from a shelter they have most love to give.
Get a ba<x>senji dog. they are barkless, good for apartment dwellers. and a little larger than an ankle biter. Never had one myself, but I read about them.
Fish!!! Aquariums are very relaxing and calming.
A Kraken. I love mine. But I released him, and he hasn't returned. Now I really miss him.
"Release the Kraken"!!!!!! *voice of Liam Neeson*
a dog needs more space than that, and it would get too lonely if you're away all day
a big *** lizard or a foul talking bird
Get a Monkey but you have to watch out because they like to throw poop.