So sorry about the situation you are in.
Going through the landlord may be your best bet....My inlaws have rental property and they have to keep insurance. I don't know if it would cover something like this but I would think so. I do know homeowners insurance covers pets biting people or other animals but dont know if it applys to those renting the home but it may be worth checking into.
As far as the CSF, my brother had it and the symptoms start out similar to mono. Swollen gland, tired (more than usual), slack in appitite(sp?), and these will come and go but gradually worsen with each episode. If csf is a concern they will put you antibiotics and possibly a low dose steriod for the swollen glands.
I wouldn't panic, Pay attention to o your body and if you notice any symptoms have it checked.
In the mean time, get a calandar and start doccumenting EVERYTHING, all phone call to AC,police, neighbors,etc...
take pics of bites and if possible the cat in your yard.
Make sure the kids know how to throw BIG rocks and work on their aim...LOL... no, seriously, though, don't scare them but be sure they know to stay away,, and don't run if it chases. Teach them how scare back, if that don't work, go for that rock...
Good luck, and hope it all works out well.
Most of all, if you let it drive you nuts it will... You are in charge! Stay in control!
lisa