Ours likes to bite when he wants food or entertainment. He'll brush against your shins and do the long sad meow, first. If you fail to comply, his tail starts to thrash, and his pupils dilate rapidly. From there, he bites at your feet and calves until you either entertain him with a toy, or get him some food. You have to figure out which it is he wants to get him to stop. I used to scoop him up in a way that he can't bite at me and let him chew on a toy until he'd worked out his frustration, but my wife wanted him to stop it altogether, so we had to go to squirt bottle diplomacy. Now, when he starts to attack, he only has to see the squirt bottle to back off. You can only pet him for a few seconds before he gets annoyed and bats your hand away. He just wants to be where we are and to be served. He is a cute little critter, though. We're hoping he ends up actually wanting to just sit on our laps and chill as he gets older.