On a more serious note - check your local laws. My conscience says we're not allowed to have landlords, but where I live you cannot deny capitalists that right, so that part is void. A lot of neighbors also have landlords, so it's very much not fine.

The broker handling our apartment on the owner's behalf told us the owner was opposed to pets, but couldn't legally prohibit us from getting an indoor cat with a wink and the previous tenants had one too. Apparently she didn't kick up a fuss - unlike the neighbour, who must be very happy to live in an area where I know of at least five different cats in the vicinity, given that she deeply hates cats.