Don't Bite The Hand That Feeds You!

I have both problems, to a lesser extent.  To be honest, I'm not really sure what the best solutions are since my first two were never biters.  My youngest cat has always been a nipper.  She likes to play with hands.  She does not bite hard or out of aggression, it's just play, but it's annoying.  I think to her, chewing is a sign of affection.  She was declawed before I got her and chewed her paws while they were healing.  During this time, she would chew our fingers one by one, very lightly.  I think she uses nipping and chewing like other cats using licking or rub their head b/c they think head rubs feel great.  If I pull away, she thinks it's a game and continues the nip attack.  The only thing I've found that works is I just freeze with my hand in her mouth, then lightly scruff her and pull her away.  I've read that scruffing mimicks what the mother does to teach her kittens.  Also, it immobilizes her so that she cannot twist and bite again, so she knows the game is up.  It sounds like your cat is play biting when it attacks your feet.  Don't pull or kick it away b/c it will think this is part of the game.  Say OUCH pretty loud, then scruff the cat to remove it, and set it down in front of a toy.

It sounds more like when you're holding your cat, it's biting out of aggression from overstimulation, rather than play (play biting can hurt, but out of all the play bites I get she's never broken skin and doesn't even really bite, just closes her mouth on my hand or my chin).  If this is the case, I'm not sure it can be trained out of the cat.  Some cats just get sick of being held.  You will have to learn to read the cat's moods and signs so you can let it go before the cat feels it has to attack.  It's not that you're doing anything wrong, some cats just aren't as snuggly.  My tuxedo cat will sit on my lap and sleep curled around my head - as long as SHE is the one that comes to me.  I cannot pick her up, hold her, or carry her.  She squirms and scratches and will start whining and howling.  She's not afraid of me and loves to be pet and scratched, but she just isn't cuddly.  My boy cat will let me pick him up and carry him for a while, but when he's done his ears go back and he gives little meows and tries to push away.  He doesn't bite, but he probably would if I held him long enough.

I read in this article that the main reason cats play too rough or turn play into aggression is because they don't get the right stimulation.  Does your cat have toys it likes?  Do you play with it for an hour or so every day?  Is it left alone all day?  Cats are a lot more like dogs in their needs than many people think.  They will get bored and start acting out.  Maybe you'd consider getting another cat?  My first cat attacked me all the time as a kitten.  I was scared to have him sleeping in my room b/c he kept leaping onto my face at night and once scratched my eye.  I got another kitten and they became playmates and keep each other company.

I've also ready that if the kitten is taken away from a mother at a young age and then not homed with other cats or kittens, it can become more aggressive because it does not know how to behave because no other cat taught it.

Siamese cats tend to be a bit more aggressive (or less tolerant) and also tend to be more vocal and will demand attention.  Basically, the Siamese cat takes cat behaviors and exaggerates them.  They are almost dog-like in that you can't expect a Siamese cat to lay on the couch all day and play with it's toys or let you pet it once in a while.  Since they are very intelligent cats, it's important to properly teach them what behaviors are acceptable, and in teaching them, the most important thing is consistency.  I wish I could be more specific with helpful examples, but I don't own Siamese cats (mainly for these reasons - I work all day and need cats that don't care if they are left alone).  Siamese can also be territorial, though I'm not sure if this is the case in your situation.

The following articles all mention the overstimulation aggression and what warning signs to watch for.  It sounds as though this is very common in cats.

http://www.littleshelter.com/library/cat_no_scratch.htm

http://ezinearticles.com/?Why-Does-My-Cat-Bite-My-Hand-When-I-Stroke-Her?&id=289102

http://www.pets.ca/pettips/tips-37.htm

http://www.catsplay.com/thedailycat/2003-09-29/mind_behavior/biting/biting.html 

As for the fabric chewing, that is also a Siamese thing.  They will even ingest the fabric.  Usually it's not digested so it's no big deal, as long as the pieces are small enough to swallow and pass.  Again, since I don't own Siamese, I'm not sure if this is preventable or not, but it's definitely a breed trait.

any cat cat have pica (I believe that's the name of fabric sucking/chewing) and usually it's related to being weaned too early.
I would try a Feliway diffuser in various spots in your house. And look up pica for some research.
here is some info on pica
[linkhttp://www.vmth.ucdavis.edu/home/beh/feline_behavior/pica.html]http://www.vmth.ucdavis.edu/home/beh/feline_behavior/pica.html[/link]
I've had many siamese cats come and go and the only fabric sucker I've ever had is a DSH that I grabbed from a cat collector situation when she was 6 weeks old. I once fostered a litter of siamese kittens whose mom was PTS when they were only 4 weeks old. I kept in touch with their adopters and none of them ever had to deal with pica.
Siamese cats are just smart and can be very independent but usually when they adore their person it's just simple adoration and many will let themselves die if separated. But they know what they want and usually find a way to get it.
Try the diffusers for awhile and see if that helps. If not you might want to ask your vet since the fabric eating can end up being life threatening.

Peaches, is also a biter. Its always when you pet her and I believe she gets overstimulated. I  always know when her mood changes into attack mode, so i stop all contact.

I can deal with this problem we in the house know how to read our cat.  A few pets and he is done.  If he is hiding under the end of the couch cover....... watch your feet!!! But how do you deal with a cat who growls and attacks strangers?  Our cat who is almost one -year -old litterally growls at and goes after any visiters who come to my home.  I mean at this point he gets put into the bathroom where his litter box is when people are over .  It is not just kids it is adults too.  But he is worse with kids.  My husband wants to remove him from the home but I don't want to have to do this.  I thought most cats who don't like strangers just hid but I have not owned a cat before so I have a lot to learn.  Any suggestions would be greatly appreciated!