Pica and fighting

Question
My male cat Wii(10months) has Pica. He eats my bra's, panties, electrical tape, electrical wires, string, rubber, plastics and any plants. I only became aware that it was an actual condition today (I always thought it was an irritating quirk).  
I adopted him with his "brother" (not sure (one is siamese  and the other, Wii, is a taby) when they were 6 weeks old. Both kittens had a foster mom as they had lost their mom. They were both happy well trained kittens (already weaned and litter box trained).

Wii started chewing things at about 4 months old, at which  time i thought he was teething and later believed he just was naughty. At that time we took in another kitten, Pixie.  Wii and the other kitten loved to play together. Because the kitten was about 8 weeks old we kept her in a bedroom when we were  out. After a month it was decided to carry on keeping the kitten locked away while we were out as the two older boys were 5 months and we didn't want to risk pregnancy. Out of nowhere Wii started attacking Pixie (the litle girl). We all thought it was hormonal because he needed to be spayed.  The other boy (Siamese) was never really interested in the girl and always just ignored her.  

Both the boys were spayed at 7 months (3 months ago). Yet the fighting has still persisted. Wii knows not to attack   Pixie and will only attack when we are not watching (he knows its wrong). I do not think it is hormonal and think it maybe because she (Pixie) is always locked away or it could be because she is not submissive when he attacks (she hisses, and generally runs, but after watching a show called Blood brothers on natgeo i think that Wii may want Pixie to be submissive and accept him as the male of the house and just roll over onto her back but it could also possibly be because she is always away & he may think of her as a new cat each time.)He is generally a very placid cat (although he could be mistaken for a raccoon with his sneakiness, he is very intelligent) and is never violent in any way.

Back to the issue of Wii's Pica. After research i have found that it could be medically related, from boredom or stress. I have phoned my vet and we are taking him for testing. But if it is behavioral do you think that the stress of another cat could be causing it or the boredom as he is an indoor cat and I wont let him out (They think of cats like rats here.) I think he is pretty entertained as he has his brother to play with and I am very affectionate with them.

I'm buying him some grass this evening and will try to keep him as entertained and stress free as possible until we get he results back.

Any information or advise you have will be greatly appreciated!  

Answer
Zan,

Kittens are curious by nature just as human babies are. Unfortunately another trait that kittens share with human babies is that their curiousity can get them into serious trouble or even kill them. I would suggest that you buy a product called "Bitter Apple" which as the name implies tastes awful and might help to prevent the kittens from chewing on or eating some of the things that you describe. As for the laundry munching I would suggest that you buy a covered laundry basket so that your dirty laundry remains out of reach and make sure that he never has access to your clean underclothing. If your kitty eats these things on a regular basis his intestinal tract could become blocked and this is an expensive and serious problem requiring emergency surgery. Hopefully his kittenish mischief will not end up killing him before he learns a bit more discretion. If his pica is nutritionally related you could try switching him to a high quality diet for kittens, it may end up costing a bit more at the outset, but it will mean a healthier and longer life for your kitten in the long term. Cat grass is only a partial solution to this issue, you must speak with your vet and let him/her know just how serious this is.

Kittens, like people have different personalities. Spaying and neutering should help quite a bit with aggressive tendancies as they are often related to the production of sexual hormones. It will take a few weeks after the surgeries are done to see concrete results but spaying and neutering is the best gift that you can give your indoor cat for a variety of medical and ethical reasons. Too many unwanted kittens are put to sleep simply because there are not enough families to house them. Unaltered cats have higher rates of cancers that are related to sex hormones and female cats that are not fixed can also get a nasty uterine infection that could be fatal, so that combined with cancer risks alone makes spaying and neutering the kindest thing that you can do to help ensure a longer happier life for these cats.

Hopefully this answers your questions and offers some insight into your concerns. Please do not hesitate to contact me again should you have any further questions or concerns, I will do my best to make sure that the information that you get is prompt and accurate.