No harm no foul.

Aside from the nauseating odor, I'd be concerned with fleas and their eggs hatching when the weather warms up.

Again, no harm no foul.

Tile is also less likely to absorb odors, making it a better choice for homes with pets.

I (also read "We" throughout this agreement) understand that if my pet: a. causes noise, odors, and/or damage; and/or b. causes another tenant or the owner to have an allergic reaction or phobia; and/or c. harms or acts aggressively or could be dangerous toward another tenant, contractor, neighbor, or the owner; d. causes a written complaint to be received from a neighbor, other tenant, or any other person or organization, then my pet is to be immediately removed from the premises, upon written notice from the landlord/agent, never to return (neither to live nor to visit).

You can require a Veterinarians health report on the animal AND require it be annually updated; we require all are spayed or neutered to minimize aggressive behavior and prevent the issues arising from multiple offspring; the animal must be carried by the handler or in a carrier when in confined spaces such as elevators, stairwells laundry rooms etc. unless doing so prevents the animal from performing tasks it was trained for; handler must clean up after the animal in all common areas and prevent offensive odors from emanating from their unit; handler remains responsible for actual damages caused by the animal including cleanup and damage of yard areas; nuisance animals that bark or create other disturbances NOT related to their specific tasks are grounds for removal of the animal and/or the tenant with appropriate notice.Some states do have more or less restrictions within their Fair Housing laws, so you do need to check on that, but our policies have been reviewed and approved by our RE attorneys.

As a landlord I would be concerned about accepting an intact male cat over the concern of spraying; the only hope of removing this odor indoors often involves removing drywall AND floors down to the subfloor.I'm about to include a clause that any dog or cat we accept in our rentals must also be on a monthly flea preventive program.  

Higher auto insurance premiums result, assuming no foul play, from underlying costs increasing, such as from higher manufacturing costs, which mean manufacturing costs for other things like building materials are also likely to go up.

If people want to stay in the same house they've always lived in for their entire life - good for them but penalizing the people who like to move around is foul.

For example, a Pointer is more likely to cause property damage than a Chihuahua, but a cat's odor can cause more problems than a bulldog.