But what happens if you move in and keep the snake hidden, the landlord finds out and doesn't give you the chance to get rid of them? What if the landlord is so upset that he wants you out? I'm not sure how leases work in the states but could you be evicted for lying about the pets you're keeping on their property? Then what would you do with your family and snake if you have nowhere to live? IMO it doesn't seem worth it to hide the snake. I understand it is your family but I think there's more negative that could come from this than good.